feat: add PR checks workflow for automated testing and linting

Author: saifsweelam

.github/workflows/pr-checks.yml

@@ -0,0 +1,38 @@
+name: PR Checks
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v3
+        with:
+          version: 8
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Setup recommendation-api (Linux)
+        run: |
+          cd apps/recommendation-api
+          pnpm setup-linux
+
+      - name: Lint
+        run: pnpm lint