Add GitHub Actions CI/CD pipeline for treebase-core with PostgreSQL support

.github/workflows/ci.yml

@@ -0,0 +1,70 @@
+name: CI - Build and Test
+
+on:
+  push:
+    branches: [ main, master, develop ]
+  pull_request:
+    branches: [ main, master, develop ]
+  workflow_dispatch:
+
+jobs:
+  build-and-test:
+    name: Build and Test treebase-core
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      checks: write
+      pull-requests: write
+
+    services:
+      postgres:
+        image: postgres:12
+        env:
+          POSTGRES_DB: treebasedb
+          POSTGRES_USER: treebase_user
+          POSTGRES_PASSWORD: treebase_pass
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up JDK 8
+      uses: actions/setup-java@v4
+      with:
+        java-version: '8'
+        distribution: 'temurin'
+        cache: 'maven'
+
+    - name: Configure database properties for tests
+      run: |
+        mkdir -p /tmp/mesquite
+        cat > treebase-core/src/test/resources/jdbc.properties << EOF
+        jdbc.driverClassName=org.postgresql.Driver
+        jdbc.url=jdbc:postgresql://localhost:5432/treebasedb
+        jdbc.username=treebase_user
+        jdbc.password=treebase_pass
+        mesquite.folder_dir=/tmp/mesquite
+        EOF
+
+    - name: Build treebase-core
+      run: mvn -B clean compile -f treebase-core/pom.xml
+
+    - name: Run tests
+      run: mvn -B test -f treebase-core/pom.xml
+
+    - name: Publish Test Report
+      uses: dorny/test-reporter@v1
+      if: always()
+      with:
+        name: JUnit Test Results
+        path: treebase-core/target/surefire-reports/*.xml
+        reporter: java-junit
+        fail-on-error: true