feat: add inpaint region functionality and related tools

- Enhanced cursor behavior for new tools: semantic select, mask lasso, and mask rectangle.
- Updated mask edit state to include mask asset ID and kind.
- Implemented inpaint region commands for adding, applying, and removing inpaint regions.
- Introduced new operations for lasso and semantic selection tools.
- Created UI components for candidate review and inpaint region management.
- Added tests for inpaint region commands to ensure functionality.
- Updated various components to support new inpaint features and improve user experience.

core/document.ts

@@ -1,6 +1,7 @@
 import type { Artboard } from "./artboard";
 import type { Asset } from "./asset";
 import type { DocumentId } from "./id";
+import type { InpaintRegion } from "./inpaint-region";
 
 export type ImageDocument = {
   id: DocumentId;
@@ -8,4 +9,5 @@ export type ImageDocument = {
   version: number;
   artboards: Artboard[];
   assets: Asset[];
+  inpaintRegions: InpaintRegion[];
 };