Pass in function arguments from the terminal

[rlnsanz]

The formal parameters of a function should be configurable from the terminal. For example, if we have a function defined as:

@flor.track
def fit_and_score_model(gamma, C, test_size, random_state):
    ...

Then when we run the script from the terminal, the input arguments should be flaggable:

python iris.py --gamma 0.001 --C 100.0 --test_size 0.15 --random_state 42

If the function argument names are the same across functions, we'll need some way to disambiguate the names. A possible solution is to prefix the function name in the flag, much like in SQL we would prefix the name of the table when a column name appears in more than one table in the FROM clause.