feat: add ComfyUI integration for image generation

- Implemented ComfyUI API for generating images with various modes (text-to-image, image-to-image, inpaint, outpaint).
- Created GenerateSheet and associated controls for user input on generation settings.
- Added subtle scrollbar styles for improved UI experience.
- Enhanced canvas input handling to ignore key events when focused on editable elements.
- Optimized canvas resizing logic to prevent unnecessary dispatches.
- Introduced error handling for generation failures and loading models.
- Added functionality to upload images and masks for inpainting.

commands/payloads.ts

@@ -23,7 +23,7 @@ import type {
   DocumentUngroupLayerPayload,
 } from "./document";
 import type { SelectionAddLayerPayload, SelectionSetPayload } from "./selection";
-import type { ToolEnterMaskEditPayload, ToolSetActivePayload, ToolSetBrushPreviewPayload, ToolSetBrushSettingsPayload, ToolSetBrushStrokePreviewPayload, ToolSetChromaKeySettingsPayload, ToolSetMagicWandSettingsPayload, ToolSetMaskViewModePayload } from "./tool";
+import type { ToolEnterMaskEditPayload, ToolSetActivePayload, ToolSetBrushPreviewPayload, ToolSetBrushSettingsPayload, ToolSetBrushStrokePreviewPayload, ToolSetChromaKeySettingsPayload, ToolSetGenerateSettingsPayload, ToolSetMagicWandSettingsPayload, ToolSetMaskViewModePayload } from "./tool";
 import type { TransformBeginPayload, TransformSetBoundsPayload, TransformUpdatePayload } from "./transform";
 import type {
   ViewportFitArtboardPayload,
@@ -59,6 +59,7 @@ export type CommandPayloads = {
   [commandIds.selectionClear]: void;
   [commandIds.selectionAddLayer]: SelectionAddLayerPayload;
   [commandIds.toolSetActive]: ToolSetActivePayload;
+  [commandIds.toolSetGenerateSettings]: ToolSetGenerateSettingsPayload;
   [commandIds.toolSetBrushSettings]: ToolSetBrushSettingsPayload;
   [commandIds.toolSetChromaKeySettings]: ToolSetChromaKeySettingsPayload;
   [commandIds.toolSetMagicWandSettings]: ToolSetMagicWandSettingsPayload;