add vector support for milvus, es, pg

[nianliuu]

• update milvus source and sink connector, to merge with latest seatunnel code
• add vector support for postgres, then can migrate vector data into vectordb
• add vector support for elasticsearch, support cloudid, apiKey, use _id as primary key
• add quick start guide for how to use vts
• add scale for fieldmapper to support vector dimension

Purpose of this pull request

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
• [ ] Update the release-note.