Add support for wrapS and wrapT properties

[gkjohnson]

Related to #165, #91

Add support for RepeatWrapping, ClampToEdgeWrapping, and maybe MirroredRepeatWrapping to the renderer shader.

[bhouston]

I think that these are actually rarely used in my opinion. So nice to have, but definitely not absolutely required.

Here is some example code that replicates these modes:

// RepeatWrapping
texCoord0 = fract(texCoord0);

// ClampToEdgeWrapping
texCoord0 = clamp(texCoord0,0,1);

// MirroredRepeatWrapping (Ben: Is this right?  I haven't checked.)
texCoord0 = fract(texCoord0*0.5)*2.0;
texCoord0 = 1 - abs(texCoord0-1);

From here: https://forum.derivative.ca/t/custom-texture-wrapping-per-instance-in-a-glsl-shader/8661/3

[gkjohnson]

I actually didn't even know MirroredRepeatWrapping existed - I expect that one might be particularly rarely used? I feel like Clamped is more common, though. Happy to wait until there's a good test model in the wild to add these. We have two remaining pixels per texture transform parameters that can be used to store this information.

[bhouston]

Interesting discussion on twitter of which modes are actually needed: https://twitter.com/SebAaltonen/status/1536316682813186050