Using Stable Diffision models for Colorization

[Selur]

Form my perspective, the main improvements from R74 to R76 are:

• plugins can now ship with multiple copies targeting different optimization levels on x64 and have the best one automatically loaded
  
• more consistent integration with pip
  

R76 should have 'better' cache handling.

Cu Selur

Ps.: updated Hybrid_havc_test, updated dev to disable CMNet2DiT and uploading new torch with HAVC 5.8.5. (will be up in ~ 1 1/2 houra)