ui: migrate canvas to nodes

[psychedelicious]

migrate canvas to nodes

many changes across the UI and some changes to nodes backend

nodes

• image upload route accepts an image type. this way we can upload the intermediate canvas images (eg the canvas and its mask which are used for img2img) as intermediates
• make seed optional w/ default factory to generate random seeds
• add infill nodes (that's as far as I've gotten with porting the generator Inpaint class over to nodes)
• add ColorField (supporting solid infill method)
• add ImageToLatentsInvocation (VAE Encode)
• improve choose_model logic and messaging
• fix the types in inpaint.py in an effort to make sense of it

ui

well there's a ton. major points:

• redux-persist --> redux-remember. modern, maintained, but not very popular for whatever reason. lovely code.
• use RTK createListenerMiddleware to handle coordinating the more complex workflows for canvas
• migrate canvas over to nodes (seam paint regression in [bug]: seam painting regression #3361, missing inpaint width/height params - once canvas backend is fully nodified i will fix this up)
• refactor param components (no more accordions - self-contained modular collapsibles, paves the way for an eventual customizable UI setup)
• refactor tab layouts
• gallery infinite scroll w/ virtualized list (windowing) for performance
• scrollbars! (ya they need tweaking but thats OK for now)
• progress image UI improvements
• many many many bug fixes

one major regression. the responsive design was impossible to keep intact as i went through all these substantial changes. once things settle a bit (after we have controlnet UI figured out basically) i will work on it.

edit: in-canvas progress images are tricky and not yet implemented

[psychedelicious]

i see the metadata test is failing. i'll fix that tomorrow.

[Kyle0654]

Some changes probably needed, but don't want my review to hold you up.