feat(ci): add CI workflow for Java with ByteBuddy agent integration

Author: mkjsix

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  push:
+    paths:
+      - '**/*.java'
+      - 'pom.xml'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      BYTEBUDDY_VERSION: 1.17.5
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/cache@v3
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+
+    - name: Download ByteBuddy agent for tests
+      run: mvn -B dependency:copy -Dartifact=net.bytebuddy:byte-buddy-agent:${{ env.BYTEBUDDY_VERSION }} -DoutputDirectory=target/test-agent -Dtransitive=false
+
+    - name: Run unit tests
+      run: mvn -B -DargLine="-javaagent=${{ github.workspace }}/target/test-agent/byte-buddy-agent-${{ env.BYTEBUDDY_VERSION }}.jar" test