Support debugging compute shaders directly from the texture viewer

[qwmnerbvqwmn]

Description

Support directly clicking "debug" in the textureview window within ComputePass, which will pop up the compute shader debug window, and enter the current pixel pos as the dispatch thread id

[baldurk]

This functionality is deliberately not provided, as although it is common to have a 1:1 linear association of pixel to dispatch thread it is not guaranteed and the UI implying that it is could easily be confusing.

Something like this can easily be implemented as a python UI extension if you are aware of that and want to have the button anyway, and if you want extra things exposed to python such as the thread selector that is a reasonable separate request.