What kind of feature are you missing? Where do you notice a shortcoming of PTB?

i would like to be able to await coroutines before of shutting down the bot after application.run_polling().

it could be done implementing a post_shutdown method in addition to the already existing post_init method

Describe the solution you'd like

It is especially useful for closing a db connection in aiosqlite ( await db.close() )

Describe alternatives you've considered

No response

Additional context

No response