[Feature Request] Variable ETA amount for samplers

Changing ETA values can make big difference for image generations and I have used this features in Stable Diffusion WebUI. Now I decided to switch to ComfyUI. Almost features I wanted are already built-in or offered by custom nodes extensions, but I failed to find to offer variable ETA function.

I found some eta related things in comfy/samplers.py comfy/k_diffusion/sampling.py and saw eta variables but I am unable to analyze and make changes, so I kindly request a feature of variable ETA because I really like and have changed ETA value almost always.