feat: add memory management feature with UI components

- Introduced a new MemoryView component for viewing and editing AI memory files.
- Updated navigation hooks and keyboard shortcuts to include memory functionality.
- Added memory file creation, deletion, and renaming capabilities.
- Enhanced the sidebar navigation to support memory as a new section.
- Implemented loading and saving of memory files with a markdown editor.
- Integrated dialogs for creating, deleting, and renaming memory files.

apps/ui/src/routes/memory.tsx

@@ -0,0 +1,6 @@
+import { createFileRoute } from '@tanstack/react-router';
+import { MemoryView } from '@/components/views/memory-view';
+
+export const Route = createFileRoute('/memory')({
+  component: MemoryView,
+});