feat: add state_delta - optional state changes to apply to the session#4192

yingyinggu-dev wants to merge 2 commits intogoogle:maingoogle/adk-python:mainfrom

yingyinggu-dev:feature/run-live-add-state-deltayingyinggu-dev/adk-python:feature/run-live-add-state-deltaCopy head branch name to clipboard