### _Why are the changes needed?_
- Support Chinese question
- Support proxy settings
- Support setting timeout
<img width="1228" alt="image" src="https://user-images.githubusercontent.com/3898450/225851246-8762a451-9743-4c1d-8a33-cc49a926dfec.png">
### _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.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#4548 from cxzl25/chatgpt_followup.
Closes#4548
1d5715442 [Cheng Pan] Update externals/kyuubi-chat-engine/src/main/scala/org/apache/kyuubi/engine/chat/provider/ChatGPTProvider.scala
7add6a733 [Cheng Pan] Update externals/kyuubi-chat-engine/src/main/scala/org/apache/kyuubi/engine/chat/provider/ChatGPTProvider.scala
55974f298 [sychen] fix
2d360e102 [sychen] typo
19b5d0814 [sychen] doc
bdf8e29b6 [sychen] 1.utf8;2.proxy;timeout
Lead-authored-by: sychen <sychen@ctrip.com>
Co-authored-by: Cheng Pan <pan3793@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
6ded07974e
