Deprecate rarely used / old / dysfunctional E2 types

[thevurv]

matrix, matrix2 matrix4 and vector4 should really not exist, at least in their current states.

Matrices

I don't think a single person has used E2 matrices in years.
I couldn't find any issues or pull requests even as little as mentioning them.
Quaternions are king with Gohidas' Physics guide.

Better matrix type would just bind to a VMatrix.

Vector4

Same as in #2721

I'd add vector2, but it's commonly used for positions in EGP, and there's no good alternative (no fixed size array type)

[Denneisk]

A replacement for vector2 would require rewriting a good bit of everything that assumes number values. Would be more than fixed size, but also fixed type.

Could see non-indexed EGP create methods using Vectors with Z for depth, but that might be a bit awkward.

[CornerPin]

vector4 is also used to set UV coordinates for EGP polygon vertices, perhaps it could be replaced with a new vertex type?

[thevurv]

Did you mean vector2? Cause I didn't include that in this discussion for this reason

[CornerPin]

No, I meant that besides RGBA color, vector4 is also used in egpPoly, egpPolyOutline, and egpLineStrip to provide x, y, u, and v coordinates of polygon/line vertices.

wire/lua/wire/client/e2descriptions.lua

Lines 1494 to 1499 in 56ee9b9

	E2Helper.Descriptions["egpLineStrip(xwl:n...)"] = "Creates a curve with specified points as 2D/4D vectors (x,y)/(x,y,u,v)"
	E2Helper.Descriptions["egpLineStrip(xwl:nr)"] = "Creates a curve with specified points as array of 2D/4D vectors (x,y)/(x,y,u,v)"
	E2Helper.Descriptions["egpPoly(xwl:nr)"] = "Creates a polygon with specified points as array of 2D/4D vectors (x,y)/(x,y,u,v)"
	E2Helper.Descriptions["egpPoly(xwl:n...)"] = "Creates a polygon with specified points as 2D/4D vectors (x,y)/(x,y,u,v)"
	E2Helper.Descriptions["egpPolyOutline(xwl:nr)"] = "Creates a outline polygon with specified points as array of 2D/4D vectors (x,y)/(x,y,u,v)"
	E2Helper.Descriptions["egpPolyOutline(xwl:n...)"] = "Creates a outline polygon with specified points as 2D/4D vectors (x,y)/(x,y,u,v)"

[thevurv]

From the snippet you gave, all of those functions could just be passed an array including four numbers and it wouldn't know the difference, and I feel like that's a rare enough of a use to allow a breaking change for.

That function taking a vector4 instead of an array is also a major hack