Handle variable number of arrays to interpolate

[matthewrankin]

Refactor code so that a variable number of arrays can be provided that will be interpolated onto the base array's frequency points and then added to the base array.

Current Function Signature

def apply_antenna_factor(analyzer_readings, antenna_factors,
                         cable_losses=False, keep_max=True):

Potential New Function Signature

def apply_antenna_factor(base_array, keep_max=True, *args, **kwargs):

Then iterate through args and kwargs and interpolate and add as needed.