added client build yml

.github/workflows/client-build.yml

@@ -0,0 +1,35 @@
+name: build app
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [21.x]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Lint
+        working-directory: client
+        run: |
+          npm install
+          npm run prettier:check
+
+      - name: Build
+        working-directory: client
+        run: |
+          npm install
+          npm run build