chore: add ci config about opentelemetry

Signed-off-by: chenhuan <xiangyuyu_2024@qq.com>

Author: chenhuansome

.github/workflows/java_unit_tests.yml

@@ -31,6 +31,27 @@ jobs:
         with:
           java-version: '17'
           distribution: 'temurin'
+
+            git clone https://github.com/openGemini/observability.git
+            cd observability/trace/java
+            mvn install -DskipTests
+
+            - name: Run Tests with JaCoCo
+              run: |
+                mvn test -pl :your-main-module -fae -Djacoco.include=com.opengemini.** -Djacoco.output=file -Djacoco.destFile=coverage-main.exec
+                
+                coverage_files="coverage-main.exec"
+                for test_dir in tests/*; do
+                  if [ -d "$test_dir" ] && [ -f "$test_dir/pom.xml" ]; then
+                    cd "$test_dir"
+                    mvn test -fae -Djacoco.include=com.opengemini.** -Djacoco.output=file -Djacoco.destFile=../../coverage-${test_dir##*/}.exec
+                    cd ../..
+                    coverage_files="$coverage_files coverage-${test_dir##*/}.exec"
+                  fi
+                done
+                
+                mvn jacoco:merge -fae -Djacoco.dataFile=$coverage_files -Djacoco.destFile=coverage-merged.exec
+                mvn jacoco:report -fae -Djacoco.dataFile=coverage-merged.exec -Djacoco.outputDirectory=jacoco-report
       - name: setup OpenGemini
         uses: hezhangjian/setup-opengemini-action@main
       - name: unit tests