ci: automate releases with release-please (#478)

.github/workflows/release_please.yaml

@@ -0,0 +1,40 @@
+name: release_please
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  create_release_pr:
+    runs-on: ubuntu-latest
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+      tag_name: ${{ steps.release.outputs.tag_name }}
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          token: ${{ secrets.RELEASE_PLEASE_TOKEN }}
+          manifest-file: ".release-please-manifest.json"
+          config-file: "release-please-config.json"
+
+  retag:
+    needs: create_release_pr
+    if: ${{ needs.create_release_pr.outputs.release_created == 'true' }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Update major version tag
+        run: |
+          VERSION=${{ needs.create_release_pr.outputs.tag_name }}
+          MAJOR=${VERSION%%.*}
+          git config user.name 'github-actions[bot]'
+          git config user.email 'github-actions[bot]@users.noreply.github.com'
+          git tag -fa "${MAJOR}" -m "Update ${MAJOR} tag to ${VERSION}"
+          git push origin "${MAJOR}" --force

.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "3.0.0"
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "very-good-coverage",
-  "version": "2.1.0",
+  "version": "3.0.0",
   "description": "A Github Action which helps enforce code coverage threshold using lcov",
   "type": "module",
   "main": "index.js",

release-please-config.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "changelog-sections": [
+    { "type": "feat", "section": "Features" },
+    { "type": "fix", "section": "Bug Fixes" },
+    { "type": "refactor", "section": "Refactors" },
+    { "type": "chore", "section": "Miscellaneous Chores" },
+    { "type": "docs", "section": "Docs" }
+  ],
+  "pull-request-header": ":rotating_light: There are changes ready for release :rocket:\n\nℹ Merge this PR once the team confirms the release is ready.\n",
+  "pull-request-title-pattern": "chore: ${version}",
+  "include-component-in-tag": false,
+  "packages": {
+    ".": {
+      "release-type": "node",
+      "changelog-path": "CHANGELOG.md"
+    }
+  },
+  "exclude-paths": [
+    ".github",
+    ".release-please-manifest.json",
+    "release-please-config.json",
+    "CONTRIBUTING.md",
+    "tool"
+  ]
+}