[Umbrella] Introduce OpenMLDB engine

### 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) and found no similar issues.

### Describe the proposal

OpenMLDB is an open-source machine learning database that provides a feature platform computing consistent features for training and inference. OpenMLDB is an open-source machine learning database that is committed to solving the data and feature challenges. OpenMLDB has been deployed in hundreds of real-world enterprise applications. It prioritizes the capability of feature engineering using SQL for open-source, which offers a feature platform enabling consistent features for training and inference. Kyuubi could introduce OpenMLDB engine to support the SQL gateway of machine learning database.

### Task list

Introduce OpenMLDB engine.

### 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.

The issue names no files, tests, or entry points and only gives the umbrella task of introducing an OpenMLDB engine. Start by reviewing how existing engines are integrated in Kyuubi and ask the community to define the required scope. Done is not specified beyond adding OpenMLDB engine support.

Written by the indexing model from the issue text.