Build and Test YOJ using GitHub Actions on any PR and merge to main

.github/workflows/build.yaml

@@ -0,0 +1,33 @@
+name: Build YOJ (unit tests only)
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+    types: [opened, synchronize, reopened, edited, ready_for_review]
+
+jobs:
+  build:
+    name: Build YOJ (unit tests only)
+    runs-on: ubuntu-latest
+
+    env:
+      MAVEN_ARGS: --batch-mode --update-snapshots -Dstyle.color=always
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17
+          distribution: 'temurin'
+          cache: 'maven'
+
+      - name: Build with Maven
+        run: mvn $MAVEN_ARGS verify
+
+      - name: Publish Test Report
+        if: ${{ always() }}
+        uses: scacap/action-surefire-report@v1