Explore feasibility of a pytest.mark.fuzzable decorator

[marioevz]

Now that consume is closer to being a reality, we should explore the idea of making the test set fuzzable by defining a pytest marker that can be added to a test to mark some of its parameters or fixtures as fuzzable.

In the case of fuzzable parameters we could have the following:

@pytest.mark.fuzzable("dest,src,length")
@pytest.mark.valid_from("Cancun")
def test_valid_mcopy_operations(
    state_test: StateTestFiller,
    dest: int,
    src: int,
    length: int,
):

Which specifies that the test can be converted to a fuzz test and the inputs dest, src and length can be randomized.

By default, the fuzzer should try to fuzz int values from 0 - 2**256-1 but it should be possible to add a typing.Annotated that perhaps contains a function which produces the random value.

It might be possible to also add fixture names to the parameter string passed to the marker, but I'm not entirely sure if it would be possible to extract the correct annotations from the fixture function definition.

[marioevz]

@danceratopz @spencer-tb @winsvega