The purpose of this patch is to add the option to create a color
attribute paint slot from the canvas selector when in material mode.
See the discussion here: T97346
---
|Add Image Paint Slot|Add Color Attribute Paint Slot|
|{F13016547 size=full}|{F13032911 size=full}|
Reviewed By: HooglyBoogly, joeedh
Differential Revision: https://developer.blender.org/D14724