Add frontend build workflow

.github/workflows/frontend_build.yml

@@ -0,0 +1,26 @@
+name: Frontend Build
+on: push
+  # pull_request:
+  # push:
+  #   branches:
+  #     - main
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        project: ['aro', 'mcc']
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+      - name: Build ${{matrix.project}}
+        run: |
+          cd ./gs/frontend/${{matrix.project}}
+          npm run build