Utility Extensions

[solonovamax]

This PR contains a bunch of additional utility extensions, such as:

• vector operations for Vector3i, Vector3f, Vector3d, Vector2i, Vector2f, and Vector2d
• conversion functions for Pos{2,3}{i,d,f} (ie. convert from mc Vec*, BlockPos, and joml Vector* classes to the Pos* classes)
• operator overloads for common number types (Int, Long, Float, and Double. this is to avoid the overhead that comes with boxing & unboxing when using Number. the Number overload is still provided if, for whatever reason, someone has like a Byte or Short or smth and wants to multiply it)
• infix functions for the cross product and dot product
• functions for pos*Of, vec*Of, and vector*Of (eg. pos3dOf(x, y, z): Pos3d, vec3Of(x, y, z): Vec3, vector3dOf(x, y, z): Vector3d, etc.)
• a couple of functions just to make things slightly nicer on yarn (eg. toMcVec3d, which is an alias for toMcVec3, as Vec3 is named Vec3d on yarn)
• matrix operations for Matrix2f, Matrix2d, Matrix3f, Matrix3d, Matrix3x2f, Matrix3x2d, Matrix4f, Matrix4d, Matrix4x3f, and Matrix4x3d
• some convenience functions for AABB/Box
• convenience extensions for World
• convenience extensions for Registry, allowing for things like

  val MY_ITEM = Registries.ITEM.register("mymod:myid", MyItem())

  I just find this slightly cleaner for registering things.
• may add some more stuff at some point. I have a bunch of misc. utility functions in many of my projects so I'll prob go through them later and add all the useful ones.

[solonovamax]

oops, hit enter before writing the description lol