[Feature] add run params controll doris table and fields by lower case

### Search before asking

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

### Description

add run params '--use-lower-case true'

use this params to controll Doris table and fields by lower case;

### Use case

_No response_

### Related issues

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

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

Start by locating the connector's run-parameter parsing and the code that handles Doris table and field names. Check how existing parameters are documented and tested, then verify that the new --use-lower-case true option consistently controls lowercase naming for both tables and fields.

Written by the indexing model from the issue text.