CLI tool for showing the models available from OpenAI models.json

[simonw]

This would be really useful as a debugging tool.

It's potentially a bit confusing though since it would return models like text-embedding-ada-002 that this tool may not be able to work with, plus potential confusion over the difference between llm models list and llm openai models

But I think that confusion is worth risking.

[simonw]

Help output: https://github.com/simonw/llm/blob/8611aa13939d6859246f2377face5b94390006b2/docs/help.md#llm-openai---help

Demo:

llm openai models

id                                       owned_by                         created            
whisper-1                                openai-internal                  2023-02-27T13:13:04
babbage                                  openai                           2022-04-07T12:07:29
davinci                                  openai                           2022-04-07T12:31:14
text-davinci-edit-001                    openai                           2022-04-12T17:19:39
gpt-4-0314                               openai                           2023-06-27T09:13:30
...

Or with --json:

llm openai models --json

[
    {
        "id": "whisper-1",
        "object": "model",
        "created": 1677532384,
        "owned_by": "openai-internal",
        "permission": [