[feat] add ci workflow triggered by pr

.github/workflows/on_pr.yml

@@ -0,0 +1,43 @@
+name: CI workflow on PR
+
+on:
+  pull_request:
+    branches:
+      - master
+      - main
+
+jobs:
+
+  print_timestamp: 
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate timestamp
+        run: |
+          echo "TIMESTAMP=$(TZ='America/Los_Angeles' date +'%Y-%m-%d %H:%M:%S')" >> $GITHUB_ENV
+
+      - name: Print timestamp
+        run: |
+          echo "Execution time (Pacific Time Zone) $TIMESTAMP"
+
+  lint_and_test:
+    runs-on: ubuntu-latest
+    needs: print_timestamp
+    steps:
+      - name: Checkout
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
+
+      - name: Set up Node.js
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
+        with:
+          node-version: '20'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Test
+        run: npm test
+