Add Origin library to project

[kaveh808]

@JMC-design

https://git.mfiano.net/mfiano/origin
https://quickdocs.org/origin

[JMC-design]

So I've already got a branch working with my point protocol, with all point stuff package prefixed with p: so I can just copy that over and have a slight indirection in a P: package wrapping origin, or I can just change those prefixes to origin.vec3 and it should be good to go. or maybe that should be origin.vec4 to be ready for transforms or else we cant use them as is.
I think some indirection might be nice in case there's a need to swap to another point/vector library.

[kaveh808]

Sounds good. Let's put the wrapper around origin.vec4.

[JMC-design]

sure thing, will do tomorrow morning.

[JMC-design]

So this isn't quite that simple. origin, in it's being 'correct', doesn't do things like cross-products of vec4's, or if you want to scale by number it will scale w, so it's like you need some functions from vec3 some from vec4.
I remember mfiano expressing frustration over separate functions for each type, this might be why mfiano created gfxmath after this and then completely jumped ship to julia.
In general I haven't seen any visible difference between what's there, my generic point protocol, or 3d-vectors.

[kaveh808]

In that case let's wrap around vec3. That will do us fine.