add coverage report

Author: zhongkechen

.github/workflows/build.yml

@@ -59,3 +59,16 @@ jobs:
 
       - name: Build and test
         run: mvn -B install --file pom.xml
+
+      - name: Generate JaCoCo Badge
+        if: ${{ github.ref == 'refs/heads/master' && matrix.java == 17 }}
+        uses: cicirello/jacoco-badge-generator@v2
+        with:
+          jacoco-csv-file: build/reports/jacoco/test/jacocoTestReport.csv
+          badges-directory: build/reports/jacoco/test/html/badges
+
+      - name: Publish coverage report to GitHub Pages
+        if: ${{ github.ref == 'refs/heads/master' && matrix.java == 17 }}
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: build/reports/jacoco/test/html

README.md

@@ -3,6 +3,7 @@
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Java](https://img.shields.io/badge/java-%3E%3D17-brightgreen)](https://openjdk.org/)
 [![Build](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/build.yml/badge.svg)](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/build.yml)
+[![Coverage](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/coverage.yml/badge.svg)](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/coverage.yml)
 [![E2E Tests](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/e2e-tests.yml/badge.svg)](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/e2e-tests.yml)
 [![CodeQL](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/github-code-scanning/codeql/badge.svg)](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/github-code-scanning/codeql)
 [![Spotless](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/check-spotless.yml/badge.svg)](https://github.com/aws/aws-durable-execution-sdk-java/actions/workflows/check-spotless.yml)