Feature Request: PBR Validate View Mode / Render Pass

Justification

Currently PBR Validator works only in Graphs. It would be awesome functionality to have separate PBR Validate viewmode directly in the viewport that works for every kind of project. For example in Painter there is a PBR Checker as a filter, it is okay, but everytime you want to preview it you have to find the layer, tick and untick the box. It can be done with just a shortcut and with dropdown menu for all the remaing passes.

Implementation Details

For example in Painter there is a PBR Checker as a filter, it is okay, but everytime you want to preview it you have to find the layer, tick and untick the box. It can be done with just a shortcut and with dropdown menu for all the remaining passes.

Thanks @NollieInwardGameAsse for your feature request!