Modified the way before/teardown functions

[Saunakghosh10]

Here are the changes made to the code:

Added type hints to function parameters and return types.
Fixed the before_func and teardown_func functions to be asynchronous.
Modified the way before/teardown functions are registered with Quart application to ensure they are inserted at the beginning of the list.

[danielknell]

it is already inserting them at the start of the list, insert(0, ...) should place the new item at the start of the list.

do you have a minimal example showing this not to be the case?

[danielknell]

Suggested change

	import typing
	"""
	Request :class:`~injector.Scope`.
	"""
	import typing

why remove the comment and spacing? this will upset the linters.