Add go2rtc and extend camera integration for better WebRTC support (#124410)

CODEOWNERS

Dockerfile

homeassistant/components/camera/__init__.py

homeassistant/components/camera/const.py

homeassistant/components/camera/diagnostics.py

homeassistant/components/camera/helper.py

homeassistant/components/camera/webrtc.py

homeassistant/components/go2rtc/__init__.py

homeassistant/components/go2rtc/config_flow.py

homeassistant/components/go2rtc/const.py

homeassistant/components/go2rtc/manifest.json

homeassistant/components/go2rtc/server.py

homeassistant/components/go2rtc/strings.json

homeassistant/components/nest/camera.py

homeassistant/components/rtsp_to_webrtc/__init__.py

homeassistant/generated/config_flows.py

homeassistant/generated/integrations.json

homeassistant/package_constraints.txt

pyproject.toml

requirements.txt