Add supported CPU/GPU operators to API docs and update docstrings

.gitattributes

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+python/cuml/_version.py export-subst

.github/CODEOWNERS

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+#cpp code owners
+cpp/               @rapidsai/cuml-cpp-codeowners
+
+#python code owners
+python/            @rapidsai/cuml-python-codeowners
+
+#cmake code owners
+**/CMakeLists.txt  @rapidsai/cuml-cmake-codeowners
+**/cmake/          @rapidsai/cuml-cmake-codeowners
+python/setup.py    @rapidsai/cuml-cmake-codeowners
+build.sh           @rapidsai/cuml-cmake-codeowners
+**/build.sh        @rapidsai/cuml-cmake-codeowners
+
+#build/ops code owners
+.github/           @rapidsai/ops-codeowners
+ci/                @rapidsai/ops-codeowners
+conda/             @rapidsai/ops-codeowners
+**/Dockerfile      @rapidsai/ops-codeowners
+**/.dockerignore   @rapidsai/ops-codeowners
+dependencies.yaml   @rapidsai/ops-codeowners

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve cuML
+title: "[BUG]"
+labels: "? - Needs Triage, bug"
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Steps/Code to reproduce bug**
+Follow this guide http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports to craft a minimal bug report. This helps us reproduce the issue you're having and resolve the issue more quickly.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Environment details (please complete the following information):**
+ - Environment location: [Bare-metal, Docker, Cloud(specify cloud provider)]
+ - Linux Distro/Architecture: [Ubuntu 16.04 amd64]
+ - GPU Model/Driver: [V100 and driver 396.44]
+ - CUDA: [9.2]
+ - Method of cuDF & cuML install: [conda, Docker, or from source]
+   - If method of install is [conda], run `conda list` and include results here
+   - If method of install is [Docker], provide `docker pull` & `docker run` commands used
+   - If method of install is [from source], provide versions of `cmake` & `gcc/g++` and commit hash of build
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/documentation-request.md

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+---
+name: Documentation request
+about: Report incorrect or needed documentation
+title: "[DOC]"
+labels: "? - Needs Triage, doc"
+assignees: ''
+
+---
+
+## Report incorrect documentation
+
+**Location of incorrect documentation**
+Provide links and line numbers if applicable.
+
+**Describe the problems or issues found in the documentation**
+A clear and concise description of what you found to be incorrect.
+
+**Steps taken to verify documentation is incorrect**
+List any steps you have taken:
+
+**Suggested fix for documentation**
+Detail proposed changes to fix the documentation if you have any.
+
+---
+
+## Report needed documentation
+
+**Report needed documentation**
+A clear and concise description of what documentation you believe it is needed and why.
+
+**Describe the documentation you'd like**
+A clear and concise description of what you want to happen.
+
+**Steps taken to search for needed documentation**
+List any steps you have taken:

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for cuML
+title: "[FEA]"
+labels: feature request, ? - Needs Triage
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I wish I could use cuML to do [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context, code examples, or references to existing implementations about the feature request here.

.github/ISSUE_TEMPLATE/submit-question.md

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+---
+name: Submit question
+about: Ask a general question about cuML
+title: "[QST]"
+labels: "? - Needs Triage, question"
+assignees: ''
+
+---
+
+**What is your question?**

.github/labeler.yml

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+# https://github.com/actions/labeler#common-examples
+# Adapted from https://github.com/rapidsai/cuml/blob/main/.github/CODEOWNERS
+# Labels culled from https://github.com/rapidsai/cuml/labels
+
+Cython / Python:
+  - 'python/**'
+  - 'notebooks/**'
+
+CUDA/C++:
+  - 'cpp/**'
+
+CMake:
+  - '**/CMakeLists.txt'
+  - '**/cmake/**'
+
+ci:
+  - 'ci/**'
+
+conda:
+  - 'conda/**'
+

.github/ops-bot.yaml

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+# This file controls which features from the `ops-bot` repository below are enabled.
+# - https://github.com/rapidsai/ops-bot
+
+auto_merger: true
+branch_checker: true
+label_checker: true
+release_drafter: true
+copy_prs: true
+recently_updated: true

.github/workflows/build.yaml

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+name: build
+
+on:
+  push:
+    branches:
+      - "branch-*"
+    tags:
+      - v[0-9][0-9].[0-9][0-9].[0-9][0-9]
+  workflow_dispatch:
+    inputs:
+      branch:
+        required: true
+        type: string
+      date:
+        required: true
+        type: string
+      sha:
+        required: true
+        type: string
+      build_type:
+        type: string
+        default: nightly
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  cpp-build:
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/conda-cpp-build.yaml@cuda-118
+    with:
+      build_type: ${{ inputs.build_type || 'branch' }}
+      branch: ${{ inputs.branch }}
+      date: ${{ inputs.date }}
+      sha: ${{ inputs.sha }}
+  docs-build:
+    if: ${{ startsWith(github.ref, 'refs/heads/branch-') }}
+    needs: [python-build]
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/custom-job.yaml@cuda-118
+    with:
+      build_type: branch
+      node_type: "gpu-latest-1"
+      arch: "amd64"
+      container_image: "rapidsai/ci:latest"
+      run_script: "ci/build_docs.sh"
+  python-build:
+    needs: [cpp-build]
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/conda-python-build.yaml@cuda-118
+    with:
+      build_type: ${{ inputs.build_type || 'branch' }}
+      branch: ${{ inputs.branch }}
+      date: ${{ inputs.date }}
+      sha: ${{ inputs.sha }}
+  upload-conda:
+    needs: [cpp-build, python-build]
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/conda-upload-packages.yaml@cuda-118
+    with:
+      build_type: ${{ inputs.build_type || 'branch' }}
+      branch: ${{ inputs.branch }}
+      date: ${{ inputs.date }}
+      sha: ${{ inputs.sha }}
+  wheel-build-cuml:
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/wheels-manylinux-build.yml@cuda-118
+    with:
+      build_type: ${{ inputs.build_type || 'branch' }}
+      branch: ${{ inputs.branch }}
+      sha: ${{ inputs.sha }}
+      date: ${{ inputs.date }}
+      package-name: cuml
+      package-dir: python
+
+      # Note that this approach to cloning repos obviates any modification to
+      # the CMake variables in get_cumlprims_mg.cmake since CMake will just use
+      # the clone as is.
+      extra-repo: rapidsai/cumlprims_mg
+      extra-repo-sha: branch-23.02
+      extra-repo-deploy-key: CUMLPRIMS_SSH_PRIVATE_DEPLOY_KEY
+
+      skbuild-configure-options: "-DCUML_BUILD_WHEELS=ON -DDETECT_CONDA_ENV=OFF -DDISABLE_DEPRECATION_WARNINGS=ON -DCPM_cumlprims_mg_SOURCE=/project/cumlprims_mg/"
+  wheel-publish-cuml:
+    needs: wheel-build-cuml
+    secrets: inherit
+    uses: rapidsai/shared-action-workflows/.github/workflows/wheels-manylinux-publish.yml@cuda-118
+    with:
+      build_type: ${{ inputs.build_type || 'branch' }}
+      branch: ${{ inputs.branch }}
+      sha: ${{ inputs.sha }}
+      date: ${{ inputs.date }}
+      package-name: cuml

.github/workflows/labeler.yml

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+name: "Pull Request Labeler"
+on:
+- pull_request_target
+
+jobs:
+  triage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@main
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/new-issues-to-triage-projects.yml

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+name: Auto Assign New Issues to Triage Project
+
+on:
+  issues:
+    types: [opened]
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  assign_one_project:
+    runs-on: ubuntu-latest
+    name: Assign to New Issues to Triage Project
+    steps:
+    - name: Process bug issues
+      uses: docker://takanabe/github-actions-automate-projects:v0.0.1
+      if: contains(github.event.issue.labels.*.name, 'bug') && contains(github.event.issue.labels.*.name, '? - Needs Triage')
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_PROJECT_URL: https://github.com/rapidsai/cuml/projects/1
+        GITHUB_PROJECT_COLUMN_NAME: 'Needs prioritizing'
+    - name: Process feature issues
+      uses: docker://takanabe/github-actions-automate-projects:v0.0.1
+      if: contains(github.event.issue.labels.*.name, 'feature request') && contains(github.event.issue.labels.*.name, '? - Needs Triage')
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_PROJECT_URL: https://github.com/rapidsai/cuml/projects/2
+        GITHUB_PROJECT_COLUMN_NAME: 'Needs prioritizing'
+    - name: Process other issues
+      uses: docker://takanabe/github-actions-automate-projects:v0.0.1
+      if: contains(github.event.issue.labels.*.name, '? - Needs Triage') && (!contains(github.event.issue.labels.*.name, 'bug') && !contains(github.event.issue.labels.*.name, 'feature request'))
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_PROJECT_URL: https://github.com/rapidsai/cuml/projects/3
+        GITHUB_PROJECT_COLUMN_NAME: 'Needs prioritizing'