feat: add customizable memory_service extension for get_fast_api_app#2896

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

stonyme:add-customizable-memory_service-extension-for-get_fast_api_appstonyme/adk-python:add-customizable-memory_service-extension-for-get_fast_api_appCopy head branch name to clipboard