feat: add command palette functionality and shortcuts

- Implemented command palette with keyboard shortcut (⌘K) for opening.
- Added commands for opening, closing, setting query, and selecting items in the command palette.
- Created tests for command palette commands and input handling.
- Enhanced layer actions with functions for adding, grouping, and deleting layers.
- Updated UI components to integrate command palette and shortcuts.

commands/payloads.ts

@@ -31,6 +31,11 @@ import type {
   GenerationSelectCandidatePayload,
   GenerationSetCompareModePayload,
 } from "./generation";
+import type {
+  CommandPaletteOpenPayload,
+  CommandPaletteSetQueryPayload,
+  CommandPaletteSetSelectedIndexPayload,
+} from "./palette";
 import type { SelectionAddLayerPayload, SelectionSetPayload } from "./selection";
 import type { ToolEnterMaskEditPayload, ToolSetActivePayload, ToolSetBrushPreviewPayload, ToolSetBrushSettingsPayload, ToolSetBrushStrokePreviewPayload, ToolSetChromaKeySettingsPayload, ToolSetGenerateSettingsPayload, ToolSetMagicWandSettingsPayload, ToolSetMaskViewModePayload } from "./tool";
 import type { TransformBeginPayload, TransformSetBoundsPayload, TransformUpdatePayload } from "./transform";
@@ -99,6 +104,10 @@ export type CommandPayloads = {
   [commandIds.viewportFitArtboard]: ViewportFitArtboardPayload | undefined;
   [commandIds.historyUndo]: void;
   [commandIds.historyRedo]: void;
+  [commandIds.commandPaletteOpen]: CommandPaletteOpenPayload;
+  [commandIds.commandPaletteClose]: void;
+  [commandIds.commandPaletteSetQuery]: CommandPaletteSetQueryPayload;
+  [commandIds.commandPaletteSetSelectedIndex]: CommandPaletteSetSelectedIndexPayload;
 };
 
 export type CommandId = keyof CommandPayloads;