feat: Add Discord-like project switcher sidebar with icon support

- Add project icon field to ProjectRef and Project types
- Create vertical project switcher sidebar component
  - Project icons with hover tooltips
  - Active project highlighting
  - Plus button to create new projects
  - Right-click context menu for edit/delete
- Add IconPicker component with 35+ Lucide icons
- Add EditProjectDialog for inline project editing
- Update settings appearance section with project details editor
- Add setProjectIcon and setProjectName actions to app store
- Integrate ProjectSwitcher in root layout (shows on app pages only)

Implements #469

Co-authored-by: Web Dev Cody <webdevcody@users.noreply.github.com>

libs/types/src/settings.ts

@@ -293,6 +293,8 @@ export interface ProjectRef {
   theme?: string;
   /** Whether project is pinned to favorites on dashboard */
   isFavorite?: boolean;
+  /** Lucide icon name for project identification */
+  icon?: string;
 }
 
 /**