Container `__getitem__` type hinting improvements

[skewty]

The following overloads seem to fix typing for me in PyCharm 2023.2.

from kink import di

di[bytes].|    # gives auto-completion for split, decode, join, etc..

from typing import Any, Dict, Type, Union, Callable, List, TypeVar, overload

T = TypeVar('T')

class Container:

    @overload
    def __getitem__(self, key: str) -> Any:
        ...

    @overload
    def __getitem__(self, key: Type[T]) -> T:
        ...

    def __getitem__(self, key):
        ...same code as before...

[dkraczkowski]

https://github.com/kodemore/kink/pull/48

Released in 0.7.0. Thanks