Fix get_components typing

[Felecarpp]

method implementation is not modified in this commit

fix #60 and #77 : get_components now return different component types

• Lines 372,376,380,383 : uses typing.Tuple and not typing.List in return value to have different component types
• Lines 372,376,380,383 : uses typing.List and not builtins.list to be compatible with python < 3.9
• Lines 383 : use typing.Iterable and not typing.List because of a mysterious mypy error "Overloaded function implementation cannot produce return type of signature"

mypy esper and pytest tests tested with python 3.11.2

check issue #77 is fixed

from esper import World

class Position:
    def __init__(self) -> None:
        self.x = 0

class Velocity:
    def __init__(self, x: int) -> None:
        self.x = x

world = World()
ent = world.create_entity(Position(), Velocity(1))
for ent, (pos, vel) in world.get_components(Position, Velocity):
    pos.x += "z"

$ mypy esper_mypy_test.py 
esper_mypy_test.py:17: error: Unsupported operand types for + ("int" and "str")  [operator]
Found 1 error in 1 file (checked 1 source file)

[benmoran56]

Thanks for this.

I think four components is a reasonable number of components to account for. It's already bordering on being too messy, so I am happy with this.