Overhaul for Controlnet, img2img and more

[w4ffl35]

New features

• Preliminary LLM Support
• Improved canvas with support for dragging, multiple images per layer zoom
• Model Manager which allows for easy management of models
• CivitAI model downloader to automatically download models from CivitAI by pasting a URL
• Layer merging
• Clip skip generate option added
• Ability to delete pixels outside of the active grid area by pressing shift+delete
• Splitter widgets added for better panel management
• Easy open prompt builder button added to generator form
• Save prompts button added to generator form
• Previously active tabs are now remembered and reactivated between sessions
• Second seed for prompt builder and other interface related calls to random
• Styles moved into a QSS stylesheet and adds a style sheet builder tool
• Black image with "NSFW" in center is displayed when a NSFW image is generated and the NSFW filter is enabled
• Models and embeds directories are now scanned on load and the DB is updated with new data automatically
• Settings files are now stored in SQLite DB
• Templates are now properly set up with pyqt designer. Buttons and other actions are linked within designer and handled with widget controller files. Widgets follow a consistent pattern and are easier to develop.
• Filters have been moved to the database, making them easier to maintain. Additionally they may now be combined dynamically
• Automatically apply filters to generated images
• Combined txt2img / img2img tab. Enable input image to use img2img
• Input Image image tool which allows for improved interaction with input images (for img2img, pix2pix, depth2img etc)
• Controlnet tool which allows for improved interaction with ControlNet. Allows for the ability to import and export (as well as view) controlnet masks.
• Pipeline loading Pipelines are now loaded dynamically by using data from the DB
• Error handling and messaging improvements
• Improvements to batch generation
• improvements to socket server and first steps towards fully supporting the engine via socket server
• Improved settings manager signal handling
• Improved tracking of generator tabs in settings manager
• Various bug fixes
• Moves layers to database - images are now reloaded from DB on session reload
• Moves active grid area settings to DB
• Allows active grid area border and fill to be modified
• Allows active grid area to be disabled