[connector-v2][iceberg sink] add iceberg sink connector

[ic4y]

Purpose of this pull request

Check list

• Code changed are covered with tests, or it does not need tests for reason:
• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• Update the release-note.

[hailin0]

Please add documentation & e2e

[hailin0]

Repeat with #5072

Do you have any communication and discussion?

[felix-thinkingdata]

你会继续推进这个 iceberg sink的完成吗？

Will you continue to push for the completion of this iceberg sink?

[zengqinchris]

你会继续推进这个 iceberg sink的完成吗？

Will you continue to push for the completion of this iceberg sink?

同问，用了比较久的seatunnel，一直卡在sink iceberg的功能，啥时候可以出来呢？

By the same token, I have been using seatunnel for a long time and have been stuck in the sink iceberg function. When will it be available?

[ic4y]

I will refine this pr in the next few days

[zengqinchris]

I will refine this pr in the next few days

大佬，sink iceberg的功能有计划什么时候可以在dev上测试呢？
When is there a plan to test the functionality of sink iceberg on dev?

[hailin0]

pr #6265 merged