Add bone quaternion functions

[gownosatana]

This pull request adds quaternion functions for bones which gives more control of bones

Test resource: test.zip

[gownosatana]

Sorry, forgot to change in header files, now should be good to go

[gownosatana]

@tederis

[tederis]

I would rename these functions to setElementBoneQuaternion and getElementBoneQuaternion. Because setElementBoneRotationQuaternion is oxymoron as quaternion means rotation as well.

[gownosatana]

I would rename these functions to setElementBoneQuaternion and getElementBoneQuaternion. Because setElementBoneRotationQuaternion is oxymoron as quaternion means rotation as well.

renamed

[tederis]

Although some of the conversations was marked as resolved without being actually finished I tend to turn a blind eye on it. Non-critical discrepancies in code style should not prevent a good PR from being merged in my opinion.

[Dutchman101]

Please document the new functions on wiki, @gownosatana

To be added: https://wiki.multitheftauto.com/wiki/SetElementBoneQuaternion https://wiki.multitheftauto.com/wiki/GetElementBoneQuaternion

// Edit: done, but despite the author's failure to do it, someone else did. For future reference: https://i.imgur.com/Iboa44o.png (it will be a pre-requirement of their next PR's).