Add multipart presigned URL download support to MultipartS3AsyncClient

[jencymaryjoseph]

Motivation and Context

Extends MultipartS3AsyncClient to support multipart downloads for pre-signed URLs, enabling automatic multipart behavior for large object downloads through pre-signed URLs while maintaining single-part downloads for range requests. Delegates to single part download for range requests, multipart download otherwise.

Modifications

MultipartS3AsyncClient: Added presignedUrlExtension() method that returns multipart-enabled extension
MultipartAsyncPresignedUrlExtension: New extension that wraps delegate extension with multipart capabilities
PresignedUrlDownloadHelper: Handles routing between single-part (range specified) and multipart (no range) downloads

Testing

Integration tests in MultipartS3AsyncClientTest verify correct routing behavior.
Functional tests will added in the following PRs when the subscriber is implemented.

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