Draft: d/ns: update Moses's distortion method
I recently did some work on my special weird calibration method; needed to update some things in Monado. Main things this does are:
- Renames my calibration type to just "Moses Turner's North Star distortion correction" - the old name doesn't really apply anymore, and it's probably good to imply that this is a weird thing that I need / only I am using right now
- Removes interpolation between different calibrations - I don't use it and it wasn't ever going to work that well
- Allows for grid sizes in the calibration file other than 64x64
I'm going to let this sit for a few days, in case there are other changes I realize I need to make