feat: add GitHub Actions workflow for publishing Prettier plugin to npm

Author: otnc

.github/workflows/publish-prettier-plugin.yml

@@ -0,0 +1,30 @@
+name: Publish Prettier Plugin to npm
+
+on:
+  workflow_dispatch:
+
+permissions:
+  id-token: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: prettier-plugin
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          registry-url: 'https://registry.npmjs.org'
+
+      - run: npm install
+
+      - run: npm test
+
+      - run: npm publish --provenance
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}