ci(main-build): Add GitHub Actions main workflow (build.yml) (#256)

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: "Build with ${{ matrix.java }}"
+    strategy:
+      matrix:
+        java: [ 11, 17 ]
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup java ${{ matrix.java }}
+        uses: actions/setup-java@v4
+        with:
+          java-version: ${{ matrix.java }}
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Build with Maven
+        run: mvn -B verify