Publish API docs (#1697)

.github/workflows/docs.yml

@@ -0,0 +1,36 @@
+name: Publish API docs
+
+permissions:
+  pages: write
+  id-token: write
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+
+jobs:
+  docs:
+    name: Build and publish API docs
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+      - name: Build API docs
+        run: |
+          npm ci
+          npm run docs -w langium
+      - name: Upload docs artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: packages/langium/docs
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -2,6 +2,7 @@
 .vscode-test/
 coverage/
 dist/
+docs/
 lib/
 out/
 node_modules/