Core Solver - Add Curve Fitting command

[david-cattermole]

Feature

To properly support animated sparse transform re-parenting, it will be important to fit an animation curve to another animation curve.

I have already written that code, and it is licensed under the LGPL. The project is named animCurveMatch-maya (https://github.com/david-cattermole/animCurveMatch-maya). I believe the animCurveMatch project should be merged with mmSolver. By merging with mmSolver we provide a single plug-in to be loaded to get both bundle adjustment and curve fitting functionality.

Expected behavior:
A Maya command will be provided to match one source curve to another destination curve.

[david-cattermole]

Not exactly the same, but I think Robert Joosten's Maya Keyframe Reduction tool uses some curve fitting.

https://github.com/robertjoosten/maya-keyframe-reduction