Add CLI popup and integrate with Spotlight Search for enhanced user interaction

- Introduced a new CLI popup component accessible via keyboard shortcuts (Cmd+Shift+` / Ctrl+Shift+`).
- Updated SpotlightSearch component to include CLI option in search results, allowing users to open the CLI directly.
- Added CLI entry in helpTree for improved discoverability of the CLI feature.
- Enhanced Dashboard.vue with an App Switcher for better navigation and user experience.

neode-ui/src/data/helpTree.ts

@@ -64,6 +64,7 @@ export const helpTree: HelpSection[] = [
     id: 'actions',
     label: 'Actions',
     items: [
+      { id: 'open-cli', label: 'Open CLI', path: '__cli__' },
       { id: 'install-app', label: 'Install an App', path: '/dashboard/marketplace' },
       { id: 'manage-apps', label: 'Manage My Apps', path: '/dashboard/apps' },
       { id: 'network-settings', label: 'Network Settings', path: '/dashboard/server' },