feat: implement account settings and API tokens management

- Added SettingsComponent for user profile management, including display name and password change functionality.
- Introduced TokensComponent for managing API tokens, including creation and revocation.
- Created LayoutComponent for consistent application layout with navigation and user information.
- Established main application structure in index.html and main.ts.
- Integrated Tailwind CSS for styling and responsive design.
- Configured TypeScript settings for strict type checking and module resolution.

ui/proxy.conf.json

@@ -0,0 +1,7 @@
+{
+  "/api": {
+    "target": "http://localhost:3000",
+    "secure": false,
+    "changeOrigin": true
+  }
+}