add github actions

Author: jungmair

.github/workflows/publish-insights.yml

@@ -0,0 +1,35 @@
+name: Build and Deploy Insights App
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Change to frontend directory
+        run: cd frontend
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Build Insights App
+        run: yarn workspace @lingodb/insights build
+
+      - name: Deploy to GitHub Pages
+        if: success()
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./frontend/packages/insights/build