added .yml file

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v2
+      with:
+        java-version: '17'
+
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml
+
+    - name: Run tests with Maven
+      run: mvn -B test --file pom.xml