Improved signature parsing: support for Annotated, Paramspec, NewType, TypeVarTuple

[rsokl]

Prior to this, the presence of ParamSpecArgs or ParamSpecKwargs in a signature being parsed by builds would cause an unhashable type error.

This PR fixes this bug and adds support for extracting information from Annotated and NewType, and adds support for extrapolating from variadic tuples (e.g. Tuple[int, *Ts])

Test cases are also added for Protocol and TypeVar

Before

# `sanitized_type` is applied to types by `hydra_zen.builds` when parsing target signatures

>>> sanitized_type(Annotated[int, range(10)])
Any

>>> sanitized_type(NewType("H", str))
Any

>>> sanitized_type(Tuple[*Ts])
Tuple[Any]

>>> sanitized_type(P.args)  # error
>>> sanitized_type(P.kwargs)  # error

After

>>> sanitized_type(Annotated[int, range(10)])
int

>>> sanitized_type(NewType("H", str))
str

>>> sanitized_type(Tuple[*Ts])
Tuple[Any, ...]

>>> sanitized_type(P.args)
Any

>>> sanitized_type(P.kwargs)
Any