rework Negative Guidance minimum sigma to work with AND, add infotext and copypaste parameters support

rename CPU RNG to RNG source in settings, add infotext and parameters copypaste support to RNG source

Makes a given manual seed generate the same images across different
platforms, independently of the GPU architecture in use.

Fixes #9613.

If image_cfg_scale is =1 then the original image is not used for the output. We can then use the original CFGDenoiser to get the same result to support AND functionality.

Maybe in the future AND can be supported with "Image CFG Scale"

Uses separate denoiser for edit (instruct-pix2pix) models

No impact to txt2img or regular img2img

"Image CFG Scale" will only apply to instruct-pix2pix models and metadata will only be added if using such model

This reverts commit 26983306.

big rework of progressbar/preview system to allow multiple users to prompts at the same time and do not get previews of each other

add an option to choose what you want to see in live preview (Live preview subject) and moves live preview settings to its own tab

change karras scheduler sigmas to values recommended by SD from old 0.1 to 10 with an option to revert to old

add an option to samplers for skipping next to last sigma