Extension for Euler angles

[vitali-parkhomenko]

This PR adds the following:

• Creates the derived matrix from the rotation matrix about the X-, Y-, and Z-axis
• Creates the rotation matrix from the Euler angles (intrinsic rotations):
  Proper Euler angles (z-x-z, x-y-x, y-z-y, z-y-z, x-z-x, y-x-y)
  Tait–Bryan angles (y-z-x, z-x-y, x-z-y, z-y-x).
• Extracts the Euler angles from the rotation matrix (intrinsic rotations):
  Proper Euler angles (z-x-z, x-y-x, y-z-y, z-y-z, x-z-x, y-x-y)
  Tait–Bryan angles (y-z-x, z-x-y, x-z-y, z-y-x, y-x-z).
• Tests for these features

[Groovounet]

Would you consider adding tests for these features?

[vitali-parkhomenko]

Of course, only this will take a little bit more time.

[Groovounet]

Perfect! It would be great because otherwise features tend to just die.

Thanks!

[vitali-parkhomenko]

I added the tests for the feature. If it's okay, it's also possible to add these tests for the Euler angles feature, that is not related to this pull request, but is not covered by tests now.
I mean, if you are satisfied with these tests, I can do it for glm::eulerAngleXYZ, glm::eulerAngleYXZ and glm::extractEulerAngleXYZ.

[recp]

May I ask properties of these euler angles;

• Tait–Bryan angles?
• Intrinsic or extrinsic rotations?

Thanks

[vitali-parkhomenko]

@recp Thanks for the questions!

• If you mean the sequences Tait–Bryan angles then in this pull request they are also present.
• Intrinsic rotations.

[recp]

Thank you for answering my questions;

It seems I implemented euler angles in reverse order in cglm which makes them extrinsic, I'll fix that asap. This is why I asked "intrinsic or extrinsic rotations". I'll also ask to Blender group what conventions they use.

I think the rotation conventions must present in documentation to help others

[Groovounet]

Thanks for contributing!