[Feature][python] Implementing java interfaces from python callback

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar feature requirement.

### Description

According to https://www.py4j.org/advanced_topics.html#implementing-java-interfaces-from-python-callback, we can add some interface we already define in Java code, so maybe we could add some {datasource, task, alert} plugin in python side

### Use case

_No response_

### Related issues

_No response_

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

Start with the linked Py4J guide on implementing Java interfaces from Python callbacks, then inspect the existing Java interfaces for datasource, task, and alert plugins. Define which interfaces should be exposed on the Python side and what plugin behavior is required; done means the selected plugins can be implemented and used through Python callbacks.

Written by the indexing model from the issue text.