[DOCS] Kyuubi RESTful API admin

[zwangsheng]

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• [X] I have searched in the issues and found no similar issues.

Which parts of the documentation do you think need improvement?

We need doc about introducing kyuubi rest api /admin and examples here RESTful APIs and Clients

Affects Version(s)

master

Improving the documentation

No response

Anything else

No response

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!