Add code examples to package summary pages in API refs guide

[S-Saranya1]

Add code examples in to the package summary page in Java SDK API Refs guide

Motivation and Context

Enhance the Java SDK API Refs documentation to include code examples.

Modifications

• Created a script inject_examples.py to parse the example-meta.json, map service names to package directories, generate categorized HTML sections, and inject them into package summary pages before the bottom navigation.

• Modified release-javadoc.yml to include the new script in the build pipeline, running after javadoc generation to post-process the HTML files with code examples.

Testing

• Ran the inject_examples.py script locally
• Generated javadoc documentation for test services
• Opened the package-summary.html files in browser and verified code examples sections are properly displayed
• Confirmed examples are organized by categories and links work correctly

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed
• I have added a changelog entry. Adding a new entry must be accomplished by running the scripts/new-change script and following the instructions. Commit the new file created by the script in .changes/next-release with your changes.
• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[sonarqubecloud]

Quality Gate passed

Issues
20 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud