docs: add api docs for /v1/info

[kurokobo]

Summary

This PR adds API docs for /v1/info for chat, advanced-chat, completion, and workflow.
Additionally, this PR will rearrange the contents of the API documentation so that the info and parameters sections come at the bottom.

Closes #11268

Screenshots

Before:	After:

• Chat
  
• Advanced Chat
  
• Completion
  
• Workflow
  

Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods