refactor the CI to use per-package workflow config files (#312)

- refactor the CI to use per-package workflow config files

---

- [x] I’ve reviewed the contributor guide and applied the relevant
portions to this PR.

<details>
  <summary>Contribution guidelines:</summary><br>

- See our [contributor
guide](https://github.com/dart-lang/.github/blob/main/CONTRIBUTING.md)
for general expectations for PRs.
- Larger or significant changes should be discussed in an issue before
creating a PR.
- Contributions to our repos should follow the [Dart style
guide](https://dart.dev/guides/language/effective-dart) and use `dart
format`.
- Most changes should add an entry to the changelog and may need to [rev
the pubspec package
version](https://github.com/dart-lang/sdk/blob/main/docs/External-Package-Maintenance.md#making-a-change).
- Changes to packages require [corresponding
tests](https://github.com/dart-lang/.github/blob/main/CONTRIBUTING.md#Testing).

Note that many Dart repos have a weekly cadence for reviewing PRs -
please allow for some latency before initial review feedback.
</details>

.github/ISSUE_TEMPLATE/repo_manage.md

@@ -0,0 +1,5 @@
+---
+name: "package:repo_manage"
+about: "Create a bug or file a feature request against package:repo_manage."
+labels: "package:repo_manage"
+---

.github/ISSUE_TEMPLATE/trebuchet.md

@@ -0,0 +1,5 @@
+---
+name: "package:trebuchet"
+about: "Create a bug or file a feature request against package:trebuchet."
+labels: "package:trebuchet"
+---

.github/labeler.yml

@@ -1,33 +1,33 @@
-# This configures the .github/workflows/pull_request_label.yml workflow. 
+# This configures the .github/workflows/pull_request_label.yml workflow.
 
 'type-infra':
   - changed-files:
-      - any-glob-to-any-file: '.github/**'
+    - '.github/**'
 
 'package:blast_repo':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/blast_repo/**/*'
+    - 'pkgs/blast_repo/**'
 
 'package:corpus':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/corpus/**/*'
+    - 'pkgs/corpus/**'
 
 'package:dart_flutter_team_lints':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/dart_flutter_team_lints/**/*'
+    - 'pkgs/dart_flutter_team_lints/**'
 
 'package:firehose':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/firehose/**/*'
+    - 'pkgs/firehose/**'
 
 'package:repo_manage':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/repo_manage/**/*'
+    - 'pkgs/repo_manage/**'
 
 'package:sdk_triage_bot':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/sdk_triage_bot/**/*'
+    - 'pkgs/sdk_triage_bot/**'
 
 'package:trebuchet':
   - changed-files:
-      - any-glob-to-any-file: 'pkgs/trebuchet/**/*'
+    - 'pkgs/trebuchet/**'

.github/workflows/blast_repo.yml

@@ -0,0 +1,43 @@
+name: package:blast_repo
+
+permissions: read-all
+
+on:
+  pull_request:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/blast_repo.yml'
+      - 'pkgs/blast_repo/**'
+  push:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/blast_repo.yml'
+      - 'pkgs/blast_repo/**'
+  schedule:
+    - cron: '0 0 * * 0' # weekly
+
+defaults:
+  run:
+    working-directory: pkgs/blast_repo
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sdk: [stable, dev]
+    steps:
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
+        with:
+          sdk: ${{ matrix.sdk }}
+
+      - run: dart pub get
+
+      - run: dart analyze --fatal-infos
+
+      - run: dart format --output=none --set-exit-if-changed .
+        if: ${{ matrix.sdk == 'stable' }}
+
+      - run: dart test

.github/workflows/corpus.yml

@@ -0,0 +1,43 @@
+name: package:corpus
+
+permissions: read-all
+
+on:
+  pull_request:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/corpus.yml'
+      - 'pkgs/corpus/**'
+  push:
+    branches: [ main ]
+    paths:
+      - '.github/workflows/corpus.yml'
+      - 'pkgs/corpus/**'
+  schedule:
+    - cron: '0 0 * * 0' # weekly
+
+defaults:
+  run:
+    working-directory: pkgs/corpus
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sdk: [stable, dev]
+    steps:
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
+        with:
+          sdk: ${{ matrix.sdk }}
+
+      - run: dart pub get
+
+      - run: dart analyze --fatal-infos
+
+      - run: dart format --output=none --set-exit-if-changed .
+        if: ${{ matrix.sdk == 'stable' }}
+
+      - run: dart test