add `message_thread_id` param to methods, `message_thread_id` and `is_topic_message` to `Message`#3345

Bibo-Joshi merged 8 commits intoapi_6.3_updatepython-telegram-bot/python-telegram-bot:api_6.3_updatefrom

new_param_message_thread_id_3340python-telegram-bot/python-telegram-bot:new_param_message_thread_id_3340Copy head branch name to clipboard