refactor(client)!: remove ClientTaskManager and Consumers from client#916

guglielmo-san merged 5 commits intoa2aproject:1.0-deva2aproject/a2a-python:1.0-devfrom

guglielmo-san:guglielmoc/remove_client_side_task_managerguglielmo-san/a2a-python:guglielmoc/remove_client_side_task_managerCopy head branch name to clipboard