[Feature][shade]Refactor the seatunnel-shade module.

[hawk9821]

Purpose of this pull request

Remove the seatunnel-shade module into seatunnel-shade project.
The seatunnel-shade module rarely changes, so there's no need for it to be released every time alongside seatunnel. The release of seatunnel-shade-related JARs will be handled by the seatunnel-shade project, and seatunnel can simply reference the corresponding JARs from the Maven Central Repository.

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• 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 plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config

[davidzollo]

Good job
The current 2.3.13 has already had the release branch created, and the version number needs to be changed to 3.0.0. At the same time, the release process document needs to be modified: https://seatunnel.apache.org/community/contribution_guide/release

[davidzollo]

+1
LGTM if the update content in https://seatunnel.apache.org/community/contribution_guide/release has been completed.