Remove arc rotation if arc is a circle

[KTibow]

Is your feature request related to a problem? Please describe.
SVGs with arcs that are circular sometimes have rotation. The rotation can be reset to 0, as a circle rotated any way is still a circle.

Describe the solution you'd like
Set the rotation value to 0 if the x radius is the same as the y radius.

Describe alternatives you've considered
Implement this somewhere that isn't SVGO? not sure

Additional context
I'm not sure which plugin this would fit into