Add Javadoc deployment step to GitHub Actions (#181)

Author: zhongkechen

.github/workflows/build.yml

@@ -71,5 +71,17 @@ jobs:
         if: ${{ github.ref == 'refs/heads/main' && matrix.java == 17 }}
         uses: JamesIves/github-pages-deploy-action@v4
         with:
-          branch: docs/coverage
+          branch: docs
           folder: sdk/target/site/jacoco
+          target-folder: coverage
+
+      - name: Deploy javadoc to Github Pages
+        if: ${{ github.ref == 'refs/heads/main' && matrix.java == 17 }}
+        uses: MathieuSoysal/Javadoc-publisher.yml@v3.0.2
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          javadoc-branch: docs
+          target-folder: javadoc
+          java-version: 17
+          project: maven
+

README.md

@@ -3,7 +3,9 @@
 [![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://raw.githubusercontent.com/aws/aws-durable-execution-sdk-java/refs/heads/docs/coverage/jacoco.svg)](https://aws.github.io/aws-durable-execution-sdk-java/)
+[![Javadoc](https://img.shields.io/badge/JavaDoc-Online-green)](https://aws.github.io/aws-durable-execution-sdk-java/javadoc/)
+[![Maven](https://badges.mvnrepository.com/badge/software.amazon.lambda.durable/aws-durable-execution-sdk-java/badge.svg?label=Maven)](https://mvnrepository.com/artifact/software.amazon.lambda.durable/aws-durable-execution-sdk-java)
+[![Coverage](https://raw.githubusercontent.com/aws/aws-durable-execution-sdk-java/refs/heads/docs/coverage/jacoco.svg)](https://aws.github.io/aws-durable-execution-sdk-java/coverage/)
 [![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)