Added gitHub Actions workflow configuration

.github/workflows/testing.yml

@@ -0,0 +1,32 @@
+name: My Brand Node.js CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: "18.x"
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run Jest tests
+        run: npm test
+        env:
+          ADMIN_EMAIL: ${{ secrets. ADMIN_EMAIL }}
+          JWT_SECRET: ${{ secrets. JWT_SECRET }}
+          MONGO_URI: ${{ secrets. MONGO_URI }}
+          PORT: ${{ secrets. PORT }}