build: add Github workflow to verify proper compilation and build

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+name: cc-index-table build
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ 11, 17, 21 ]
+    name: Java ${{ matrix.java }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.java }}
+          cache: 'maven'
+
+      - name: Build
+        run: mvn verify javadoc:aggregate