DX improvements: uv CI, DeprecationWarning for legacy session_kwargs, CHANGELOG, issue templates, Makefile, .env.example#26

Copilot wants to merge 4 commits intomainmahimairaja/openrtc-python:mainfrom

copilot/improve-developer-experiencemahimairaja/openrtc-python:copilot/improve-developer-experienceCopy head branch name to clipboard