Vector & Quaternion division functions

[JCPalmer]

I found myself making a class called MatrixComp, which is the rotation, translation, & scaling components of a BABYLON.Matrix broken out.  When trying to scale the matrices of a pose from a library, more than just scaling the translation is required to account for skeletons which might have different postures / builds  (rotation at rest).  Otherwise, the skeleton assumes the posture of the skeleton used to make the library, which can look weird.

I added methods to compute the ratios of each component's rest value (called basis) to the rest value that of the library.  Often, the translation of a dimension is zero, so using the divide function results in a NaN.  I wrote my own, shown below.  Is there any interest in changing the division behavior to this?  a NaN is really not useful.

this.translationBasisRatio = BABYLON.Vector3.Zero();
if (libraryBasis.translation.x !== 0) this.translationBasisRatio.x = this.translation.x / libraryBasis.translation.x;
if (libraryBasis.translation.y !== 0) this.translationBasisRatio.y = this.translation.y / libraryBasis.translation.y;
if (libraryBasis.translation.z !== 0) this.translationBasisRatio.z = this.translation.z / libraryBasis.translation.z;

Also, there is no divide for a Quaternion, but this equivalent.  Maybe, a wrapper?

this.rotationBasisRatio = this.rotation.multiply(BABYLON.Quaternion.Inverse(libraryBasis.rotation));

I also ended up with my own versions of Vector3.LerpToRef & SlerpToRef.  I am fine keeping all of this in my code, but some could be moved if wanted.

[GameMonetize]

As i asked in another post, please merge it