GeometryProcessing: add PatchBasedMeshUVGenerator, partial implementation of new AutoUV generator, currently generates UVs based on an initial patch decomposition computed externally, by incrementally merging those patches if possible.
ModelingTools: extend RecomputeUVsOp to optionally support island merging based on PatchBasedMeshUVGenerator. Add support for Normal smoothing in ExpMap, and UV Island rotation optimization. Expose new options/etc in RecomputeUVsTool, as well as add optional UV-space view.
#rb none
#rnx
#jira none
#preflight 6102000325e4a50001ac7119
#ROBOMERGE-SOURCE: CL 16992432 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v838-16927207)
[CL 16992437 by ryan schmidt in ue5-release-engine-test branch]