feat: Add pylint package and matchers

[MartinGotelli]

Add support for pydantic models:

poetry add pytest_matchers[pydantic]
pip install pytest_matchers[pydantic]

def test_pydantic():
    class Animal(BaseModel):  # pylint: disable=too-few-public-methods
        age: int
        name: str

    class Human(Animal):  # pylint: disable=too-few-public-methods
        money: float = 0

    class Dog(Animal):  # pylint: disable=too-few-public-methods
        breed: str = "Mongrel"

    messi = Human(age=33, name="Messi")
    lassie = Dog(age=3, name="Lassie", breed="Collie")
    tweety = Animal(age=1, name="Tweety")

    assert_match(messi, is_pydantic())
    assert_match(lassie, is_pydantic())
    assert_match(messi, is_pydantic(Human))
    assert_match(lassie, is_pydantic(Dog, age=3, name="Lassie", breed="Collie"))
    assert_match(tweety, is_pydantic(age=1))
    assert_match(messi, is_pydantic(Human, age=33, strict=False))