Function registerProvider

registerProvider(name: string, providerFn: (modelName: string) => unknown): void
Register a custom LLM provider for use in prompt files.
Parameters
- name: string
  Provider name (used in prompt config provider field)
- providerFn: (modelName: string) => unknown
  Factory function that creates a model from a model name string
Returns void
Example
```
import { createDeepSeek } from '@ai-sdk/deepseek';
import { registerProvider } from '@outputai/llm';

registerProvider('deepseek', createDeepSeek({ apiKey: '...' }));
```