Add reporting to GHA of japicmp and JUnit results

Author: jonahgraham

.github/workflows/junit.yml

@@ -0,0 +1,11 @@
+name: Publish Unit Test Results
+
+on:
+  workflow_run:
+    workflows: ["Validate"]
+    types:
+      - completed
+
+jobs:
+    check:
+       uses: eclipse-platform/eclipse.platform.releng.aggregator/.github/workflows/publishTestResults.yml@master

.github/workflows/validate.yml

@@ -68,4 +68,23 @@ jobs:
       run: ./gradlew build testOlderJavas
 
     - name: Run API Compare
-      run: ./releng/runjapicmp.sh
+      run: ./releng/runjapicmp.sh
+
+    - name: Upload Test Results
+      if: always()
+      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      with:
+        name: Test Results
+        if-no-files-found: warn
+        path: |
+          ${{ github.workspace }}/**/build/test-results/**/*.xml
+          ${{ github.workspace }}/**/build/reports/
+
+    - name: Upload API Compare results
+      if: always()
+      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      with:
+        name: API Compare results
+        if-no-files-found: warn
+        path: |
+          ${{ github.workspace }}/build/p2-repository/japicmp-report/