Directory Structure Refactor

[eribean]

The directory structure has become unmanageable. This issue was expected since GIRTH has grown quite a bit. Make a directory structure that better separates functions into maintainable code bases.

[eribean]

This was a major update to the girth package, most functions remained unchanged during import. The biggest change is a synthetic module that affects how simulated data functions are imported:

from girth import create_synthetic_irt_dichotomous to
from girth.synthetic import create_synthetic_irt_dichotomous .