[Feature]: Support Agents Deployed on Databricks Platform

### Pre-flight Checklist

- [x] I have searched existing issues and this hasn't been requested yet.

### Problem or Motivation

Databricks has now been used by more and more customers to deploy and use various kinds of agents that leverages the data that Databricks customers has on the platform. There are a couple of customers that asked us about this integration

### Proposed Solution

- Support for using Genie and custom agent deployment on Databricks on ag-ui
- Support OAuth (U2M, M2M) and PAT authentication for them

### Alternatives Considered

_No response_

### Additional Context

_No response_