feat: enhance project management with custom icon support and UI improvements

- Introduced custom icon functionality for projects, allowing users to upload and manage their own icons.
- Updated Project and ProjectRef types to include customIconPath.
- Enhanced the ProjectSwitcher component to display custom icons alongside preset icons.
- Added EditProjectDialog for inline editing of project details, including icon uploads.
- Improved AppearanceSection to support custom icon uploads and display.
- Updated sidebar and project switcher UI for better user experience and accessibility.

Implements #469

apps/ui/src/components/views/settings-view/shared/types.ts

@@ -26,6 +26,8 @@ export interface Project {
   name: string;
   path: string;
   theme?: string;
+  icon?: string;
+  customIconPath?: string;
 }
 
 export interface ApiKeys {