List of registered providers.

[mindaugasbudreika]

I've started playing around with the API and ran into the issue of retrieving a list of registered Providers.

Currently, calling AiClient::defaultRegistry() initializes the default registry with Anthropic, Google, and OpenAI providers, but ProviderRegistry does not have a public method to return the list of registered providers, requiring developers to maintain a separate map outside the SDK that tracks providers registered by AiClient::defaultRegistry().

I'm happy to submit a PR to implement a public getter method for it, unless there is a larger effort to rewrite existing provider registration and management logic that will address this anyway.

[jeffpaul]

@felixarntz any string preferences on technical approach here?

[felixarntz]

@mindaugasbudreika Thank you for raising this, and thanks @jeffpaul for the ping!

This was actually implemented in #79, we just haven't published a new releases, which is long overdue. We're wrapping up a few final issues and PRs, hopefully to get a 0.2.0 out by end of this week.

In the meantime, I'll close this as a duplicate of #79. Please let me know if there's a misunderstanding.