Move Calculators to State Folders

[CalebPena]

What (if any) features are you implementing?

• Create nc folder.

What (if anything) did you refactor?

• Move state specific programs to the co folder.
• Move federal programs to the federal folder.
• Move Policy Engine calculators to the respective state or federal folder.
• Make Medicaid a base class where each of the states can inherit from it.

[myang1010]

Thanks, Caleb, for initiating the change. It looks good and is quite self-explanatory. The examples provided are also helpful. Much appreciated!

[msrezaie]

Looks good. Also thank you for taking the time and adding some of the NC specific files/classes as well. Great work!