[Feature]: Model name mapping.

### Class | 类型

None

### Feature Request | 功能请求

Can we add an implementation for model name mapping? Say, as follows:

```
model_A -> model_B
```
This way, when the user requests `model_A`, `model_B` will ultimately be called.

Regards,
Zhao

The issue names no files, tests, or entry points. Start by locating where requested model names are selected and dispatched, then determine where a model_A-to-model_B mapping should be configured. Done means requests for model_A invoke model_B, with tests covering the mapping and ordinary unmapped model requests.

Written by the indexing model from the issue text.