Add CI workflow for Maven TestNG automation

This workflow automates Maven TestNG tests on push and pull request events, caching dependencies and uploading reports.

Author: rahul15sel

.github/workflows/ci.yml

@@ -0,0 +1,48 @@
+name: Maven TestNG Automation Pipeline
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      # 1. Checkout code
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # 2. Setup Java
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: "temurin"
+          java-version: "17"
+
+      # 3. Cache Maven dependencies (speeds up builds)
+      - name: Cache Maven packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+
+      # 4. Run Maven Tests
+      - name: Run TestNG tests
+        run: mvn clean test
+
+      # 5. Upload ExtentReport (HTML)
+      - name: Upload Extent Reports
+        uses: actions/upload-artifact@v4
+        with:
+          name: extent-report
+          path: |
+            **/test-output/**
+            **/ExtentReports/**
+            **/extent-report/**
+            **/reports/**
+          retention-days: 7