[Feature Request]: Load a model from a local path

### Problem Description

Thanks for such a great project

I want to try it in my Electron app.

It would be great if I could load local models

### Solution Description

```js
// Using CreateMLCEngine
const engine = await CreateMLCEngine('/path/to/local/model', { initProgressCallback });
```

### Alternatives Considered

_No response_

### Additional Context

_No response_