added github action

.github/workflows/build.yml

@@ -0,0 +1,21 @@
+name: Build application
+run-name: ${{ github.actor }} is building the application 🏗️
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20.x"
+      - run: echo "Instaling dependencies ⏬"
+      - run: npm ci
+      - run: echo $PATH
+      - run: echo "Building application 👷"
+      - run: npm run build --if-present
+      - run: echo "Building is complete ✅"
+      - run: echo "Starting tests 🧪"
+      - run: npm run test
+      - run: echo "Tests have passed ✅"