Add ControlNet tile model handling to img2img and inpaint modes

[Danamir]

Use alwayson_scripts in payload to submit the img2img or inpaint image to ControlNet 'tile' model. With added controls for ControlNet weight, guidance start, and guidance end, this allow to use a much greater denoising strength when inpainting, and let the tile model handle the image coherency.

To do :

• [x] Add radio button to select ControlNet mode
• [x] Add sliders to control CN weight, guidance start, guidance end
• [x] Alter API payload
• [x] ~~Remove unwanted returned image by CN API~~
  • The image can be useful, left as is for now
• [x] Store settings locally
• [ ] Allow multiple ControlNet modes selected at once (same settings to simplify)
• [ ] Load controlnet modules from API on launch
• [ ] Replace hardcoded tile model name by the correct one from the API
• [ ] Disable ControlNet radio buttons if not found on API side

[Danamir]

Added tentative support for other ControlNet modules and models. This allow the feature detection, and use of adapted controlnet model.

Associated modules to models :

• lineart_coarse => lineart
• pidinet_scribble => scribble
• openpose_faceonly & openpose_full => openpose