add release workflow

Author: RobinMalfait

.github/workflows/release.yml

@@ -0,0 +1,57 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+env:
+  CI: true
+  CACHE_PREFIX: stable
+  NODE_VERSION: 16
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Use Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          registry-url: "https://registry.npmjs.org"
+
+      - name: Use cached node_modules
+        id: cache
+        uses: actions/cache@v3
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-${{ env.NODE_VERSION }}-${{ env.CACHE_PREFIX }}-node_modules-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build Prettier Plugin
+        run: |
+          npm run build
+
+      - name: Test
+        run: |
+          npm run test
+
+      - name: Calculate environment variables
+        run: |
+          echo "RELEASE_CHANNEL=$(npm run release-channel --silent)" >> $GITHUB_ENV
+
+      - name: Publish
+        run: npm publish --tag ${{ env.RELEASE_CHANNEL }}
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}