[DOCS][UI] Deploy Kyuubi UI

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

### Search before asking

- [X] I have searched in the [issues](https://github.com/apache/kyuubi/issues?q=is%3Aissue) and found no similar issues.

### Which parts of the documentation do you think need improvement?

_No response_

### Affects Version(s)

master

### Improving the documentation

Kyuubi Web UI deploy

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
- [ ] No. I cannot submit a PR at this time.

Start by locating the existing Kyuubi Web UI documentation and its deployment entry points. Clarify which deployment environments and steps need coverage, then document them with enough detail for users to deploy the UI successfully.

Written by the indexing model from the issue text.