Added a GitHub action to routinely compile it

.github/workflows/maven.yml

@@ -0,0 +1,25 @@
+name: build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ 8, 11, 17 ]
+    name: Java ${{ matrix.java }}
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: temurin
+        java-version: ${{ matrix.java }}
+    - name: Build with Maven
+      run: mvn clean install