v1.2

Editor changes:

- Added vertex normals options:

* Keep From Receivers: default behaviour.

* Smooth Inside Receivers: smoothens normals within welded decal polygons.

* Average From Receivers: sets one average normal for the whole decal.

* Project From Receivers: uses rays to pick receiver normals at each source mesh vertex and then interpolates the results over the final decal mesh.

- Added options to project multiple UV channels from source/receiver.

- [Experimental] Optimize Topology option. Removes redundant polygons in generated decals.

- Create Mesh Asset takes parent prefab name into account when naming meshes.

- Added texture array support.

- Added overall opacity slider.

- Added basic decal creation menu (Decalery -> Create -> Quad decal).

- Live Preview is now a global state (doesn't reset when changing selection).

- Live Preview / Pick can now have shortcuts assigned in the Shortcut Manager.

- Fixed being able to pick source decal meshes as receivers.

- Fixed picked object highlighting remaining after moving cursor to empty space.

- Fixed applying decals to meshes without normals.

- Fixed texture atlasing in non-Burst mode.

Runtime changes:

- Added texture array support (new arguments in AddDecal).

- Added texture atlasing options to AddDecal.

- AddDecal now returns a decal Handle which can be used to remove it via DecalUtils.RemoveDecal().

- Other new API: ClearDecalsForRootTransform (thanks Nathan for suggestion).

- Added option for asynchronous readback when using GPU With Readback mode in Global Runtime Settings (improves decal spawning performance).

- Fixed DecalMeshRef component logic.

- Fixed Burst decals incorrectly marking themselves as non-Burst.

- Fixed applying GPU decals to objects with negative scale.

- Fixed not being able to spawn 2 GPU decals in 1 frame.

- Fixed memory leaks.

Other changes:

- Fixed skinned decal interpolation.

- Fixed degenerate/disappearing triangle cases in CPU code.

- Added normal-only URP shader.

- Fixed direct light specular blending in DecaleryStandardPBR.

- Normal map intensity slider in DecaleryStandardPBR.