Async http

[pkelaita]

Fixed

• In 0.0.21, async calls were blocking due to the use of requests. 0.0.22 replaces requests with httpx to allow for fully asynchoronous behavior.

Changed

• AsyncLLMClient should now be instantiated with a context manager (async with AsyncLLMClient() as client:) to ensure proper cleanup of the httpx client.
• AsyncLLMClient call_async and call_custom_async are now call and call_custom respectively, with asynchronous behavior.

Removed

• call_concurrent and call_custom_concurrent have been removed due to unnecessary complexity and lack of use.

[codecov]

Codecov Report

Attention: Patch coverage is 99.59350% with 1 line in your changes missing coverage. Please review.

Files	Coverage Δ
l2m2/__init__.py	100.00% <100.00%> (ø)
l2m2/_internal/http.py	100.00% <100.00%> (ø)
l2m2/client/async_llm_client.py	100.00% <100.00%> (ø)
l2m2/client/llm_client.py	100.00% <100.00%> (+0.49%)	⬆️
l2m2/client/base_llm_client.py	99.52% <99.52%> (ø)