### Code of Conduct
- [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
### _Why are the changes needed?_
Documents for Kyuubi client advanced features plan_only.md
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [x] Add screenshots for manual tests if appropriate

- [x] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#3557 from CauchyHu/plan-only-doc.
Closes#3557
084ce5dd [胡安忠] [DOCS]update documents for Kyuubi client advanced features plan_only.md
75ec33d3 [胡安忠] [DOCS] Add documents for Kyuubi client advanced features plan_only.md
Authored-by: 胡安忠 <huanzhong@xiaomi.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>