Calibration Naming

[Jmeyer1292]

We're getting a lot of individual calibrations, so I want to cleanup the rct_optimizations naming scheme:

• This is mostly TBD
• I'm thinking maybe subfolders (in the includes, and namespaces in the source) that indicate this function is intrinsic, extrinsic, etc.
• Add a readme that breaks down, in one sentence structures, what each calibration function does.