Make some matrix conversion jittable

[una-dinosauria]

Make sure the functions

matrix_to_axis_angle,
matrix_to_euler_angles,
matrix_to_quaternion,
matrix_to_rotation_6d,

from rotation_conversion are jittable.

Add tests to verify this is the case.

[facebook-github-bot]

@bottler has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[una-dinosauria]

oh no did I break something? :c

[facebook-github-bot]

@bottler merged this pull request in bee31c4.

[bottler]

oh no did I break something? :c

Not at all. Thank you very much for the contribution! I added scripting to some other functions in the same file into the commit that got merged. (The automated CI which shows on github has been mostly failing for a while for unrelated reasons.)