Feature request - rgthree seed input

[pixitha]

Under the hood I'm not sure what all is going on, but the seed input node from rgthree is super useful: https://github.com/rgthree/rgthree-comfy#seed

Suggest adding this style seed input to the workflow.

[SeargeDP]

Once I have finished the v4.0 release I plan to look at more extensions for ComfyUI to see if there are many idea in them that I can adapt for my workflow. This suggestion just made it on that list.