Add SimUtils DrawBone function

[lL1l1]

Description of the proposed changes

• 314f7ed Corrects the annotation for Entity:GetBoneDirection, as it returns the direction vector and not the roll pitch and yaw of the bone.
• 3a99a93 Adds a DrawBone function to SimUtils which is practically identical to how the engine displays bones with ren_showskeletons.
  • This change depends on Finalize "Update vector processing" (#5061) #6438.

Testing done on the proposed changes

Used the DrawBone function in a thread for a unit and made sure it is identical to the engine's version when the unit is moving around.

Checklist

• Changes are annotated, including comments where useful
• Changes are documented in the changelog for the next game version

[lL1l1]

Not sure if VectorCross(v1, v2) or v1 * v2 is more efficient.