Calling and loading prompts (examples and/or support)

[sandstrom]

After using Braintrust (both HTTP API, and the Ruby SDK) here are two wishes:

1. Examples of how to load prompts, and SDK support if needed. For example, loading a prompt, and then calling it using the Anthropic/Claude APIs (not going through the proxy).
2. Support for calling hosted prompts (via proxy) using the SDK.

[delner]

I updated and merged #77 which should address this. We'll release it soon.

[delner]

Hey @sandstrom this should be out as a part of 0.1.2. Feel free to try it out and let us know how it is!

[sandstrom]

Thanks @delner 🎉