Primitive 3d custom tangents

[hukasu]

Objective

Anisotropy requires tangents, and the current method of building tangents depends on UVs, which causes seams on most of the primitive shapes. But most of the primitive shapes have simple methods of calculating tangents that do not require the UVs.

Solution

Create custom calculation of the tangent for some of the 3d primitives.

Testing

Add custom primitives to the anisotropy example.

Showcase

Sphere with custom tangent calculation in the anisotropy example
Screencast_20250205_110935.webm

Migration Guide

This PR requires #17690

[hukasu]

The calculation that i'm doing is incredibly naive, it is just doing the cross product between the normal and an axis, but doing the cross product between 2 colinear vectors results in zero, what would be the best solution for this?

Sphere

Capsule