Add .github/workflows/product-map.yml (#12490)

* Add .github/workflows/product-map.yml

* Try other hack

* Remove double ()

.github/workflows/product-map.yml

@@ -0,0 +1,31 @@
+name: Product Map Generation
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  generate-map:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Get changed Java files
+        id: changed-files
+        run: |
+          FILES=$(git diff --name-only ${{ github.event.before }} ${{ github.sha }} -- '*.java' | sed 's|^|\"|' | sed 's|$|\"|' | paste -sd "," -)
+          if [ -z "$FILES" ]; then FILES="\"dummy.java\""; fi
+          echo "expected_files=(${FILES})" >> $GITHUB_ENV
+
+      - name: ProductMap Map Generation
+        uses: product-map/[email protected]
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          expected_files: ${{ env.expected_files }}
+          user_email: [email protected]