[FEATURE] Rethink pointcloud edit interface

[state-of-the-art]

Is your feature request related to a problem? Please describe.

Right now it's quite hard to select/edit points or areas of pointcloud

Describe the solution you'd like

I think some sort of 2d editor could help - because our pointclouds is basically a 2d pictures where color is a depth - so it will be useful for cutting the required parts of pc or healing editing

Describe alternatives you've considered

Selecting in 3d space requires additional algorithms and I think it's possible, but most value we can get right now from 2d editor.