Smudge Tool Feature request

Smudge Tool https://www.youtube.com/watch?v=QE5Vc6NZ1lg

Justification

This is an incredibly convenient tool for creating handpaint textures for mixing colors, I have not found analogues in this program, when using this tool, the work looks more professional and artistic

Implementation Details

This tool can be viewed in other programs for both 2D drawing and 3D drawing

Thanks @deadsue for your feature request!