[Improvement][File] Add BaseMultipleFileSink

[ruanwenjun]

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Description

Right now, we need to make file related sink connector can support multiple sink.

This need to do sub changes

1. The sink connector use new Factory API to create Sink. [Feature][Connector-V2] Support TableSourceFactory/TableSinkFactory on connector #5651
2. The sink support multiple table API. [Feature][Connector-V2] Support multi-table sink feature #5652

After we modify all file sink connectors, we can create a new BaseMultipleFileSink and move the common method in BaseMultipleFileSink , then remove the current BaseFileSink class.

Usage Scenario

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Related issues

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Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

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