Checklist

• I believe the idea is awesome and would benefit the framework
• I have searched in the issue tracker for similar requests, including closed ones

Description

It would be great if incoming messages could be processed when the bot is off.

Useful links:
pyrogram/pyrogram#731 (recover_gaps)
https://github.com/KurimuzonAkuma/pyrogram/blob/dev/pyrogram/client.py (skip_updates)