Migrate from CircleCI to Github Actions (#11)

CI/CD reusable workflows in Github Actions for Plugin software lifecycle

Ticket: https://mattermost.atlassian.net/browse/CLD-4816

---------

Co-authored-by: Ben Schumacher <[email protected]>

.github/workflows/cd.yml

@@ -0,0 +1,18 @@
+name: cd
+on:
+  workflow_run:
+    workflows: ["ci"]
+    branches-ignore: ["*"]
+    types:
+      - completed
+  push:
+    tags:
+      - "^v.*"
+
+permissions:
+  contents: read
+
+jobs:
+  plugin-cd:
+    uses: mattermost/actions-workflows/.github/workflows/plugin-cd.yml@main
+    secrets: inherit

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: ci
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches:
+      - master
+    tags:
+      - "^v.*"
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  plugin-ci:
+    uses: mattermost/actions-workflows/.github/workflows/plugin-ci.yml@main
+    secrets: inherit

.golangci.yml

@@ -6,47 +6,42 @@ linters-settings:
   gofmt:
     simplify: true
   goimports:
-    local-prefixes: github.com/mattermost/mattermost-starter-template
-  golint:
-    min-confidence: 0
+    local-prefixes: github.com/mattermost/mattermost-plugin-demo
   govet:
     check-shadowing: true
     enable-all: true
+    disable:
+      - fieldalignment
   misspell:
     locale: US
 
 linters:
   disable-all: true
   enable:
     - bodyclose
-    - deadcode
     - errcheck
     - gocritic
     - gofmt
     - goimports
-    - golint
     - gosec
     - gosimple
     - govet
     - ineffassign
     - misspell
     - nakedret
+    - revive
     - staticcheck
-    - structcheck
     - stylecheck
     - typecheck
     - unconvert
     - unused
-    - varcheck
     - whitespace
 
 issues:
   exclude-rules:
     - path: server/manifest.go
       linters:
-        - deadcode
         - unused
-        - varcheck
     - path: server/configuration.go
       linters:
         - unused

.nvmrc

@@ -0,0 +1 @@
+14.21.1