This adds support to the current sculpt sample detail operator to sample a voxel size for the voxel remesher when sculpting on regular meshes. It provides an approximation of a voxel size that is going to preserve the sampled sculpt details after remeshing. It is not going to be 100% accurate in all cases as it relies on having consistent edge length in the whole sculpt, but it saves a lot of time and avoids guessing the voxel size by trying different values. Reviewed By: jbakker Differential Revision: https://developer.blender.org/D6251