Hudi sink for Python

[GaganBrahmi]

Purpose of the change

Sample application to write to Apache Hudi table format using Python/PyFlink

Verifying this change

Please test your changes both running locally, in the IDE, and in Managed Service for Apache Flink. All examples must run
in both environment without code changes.

Describe how you tested your application, show the output of the running application with screenshots.

[INFO] 
[INFO] --- assembly:3.3.0:single (make-assembly) @ managed-flink-pyfink-hudi-sink-example ---
[INFO] Reading assembly descriptor: assembly/assembly.xml
[INFO] Building zip: /Users/brahmi/git-repos/amazon-managed-service-for-apache-flink-examples/python/HudiSink/target/managed-flink-pyfink-hudi-sink-example-1.0.0.zip
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  19.858 s
[INFO] Finished at: 2025-09-29T07:33:52-07:00
[INFO] ------------------------------------------------------------------------

Significant changes

(Please check any boxes [x] if the answer is "yes". You can first publish the PR and check them afterward, for convenience.)

• Completely new example
• Updated an existing example to newer Flink version or dependencies versions
• Improved an existing example
• Modified the runtime configuration of an existing example (i.e. added/removed/modified any runtime properties)
• Modified the expected input or output of an existing example (e.g. modified the source or sink, modified the record schema)

[nicusX]

Please also add the entry in the main README, in the Python Examples > Connectors section

[nicusX]

Thanks for the contribution.
Just a couple of very small fixes.
Also, please add the entry of the new example in the top level README

[nicusX]

typo: "setting up"

[nicusX]

Maybe add a small note, about the fact it's the example application converting s3: to s3a:
For a second, I thought it was Flink doing it.
Alternatively, remove the auto-conversion and just say to use s3a:. This is possibly less confusion.
Up to you :)

[GaganBrahmi]

Made the requested changes. Should be good to merge. The force merge was due to a rebase and squash I performed to keep the history clean.

[nicusX]

Many thanks
Approving and merging