[KYUUBI #3531] [DOC] Add documentation for Hive connector

[yikf]

Why are the changes needed?

Fix https://github.com/apache/incubator-kyuubi/issues/3531

This pr aims to add documentation for Hive connector

How was this patch tested?

• [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

• [ ] Add screenshots for manual tests if appropriate

• [ ] Run test locally before make a pull request

[yikf]

Could you please take a look when you have a time, thanks @pan3793

[pan3793]

Thanks, merging to master