[FEAT] Add transformations + unit tests for them

[aaronjridley]

Is your feature request related to a problem? Please describe. There is a need to have a bunch of rotations and coordinate transformations. Should implement a variety of these and then have unit tests for them.

Describe the solution you'd like Add to the transform.cpp code to include more rotations (scalar and vector) and coordinate transformations (like GEO->GSE) or (GEO->MAG), etc.

Describe alternatives you've considered We may not have to implement all of these, since they probably exist all over the web.

Additional context Nope.

[aaronjridley]

Added rotations around the X, Y, and Z axes point-by-point and as a vector of cubes. I need to add unit tests for these.

[aaronjridley]

Ok, we are adding transformations as we need them. This can be closed, since we are not going to add a bunch of transformations just for the heck of it.