feat(TopBar): add user settings & logout btn and finish logout function

refactor(auth): rename login-token to token for consistency

Update all token references from 'login-token' to 'token' across the application. Also enhance TopBar with user menu functionality including logout and settings options.

- Standardize token cookie name for better maintainability
- Add dropdown menu to TopBar with logout functionality
- Implement click-outside behavior for menu
- Improve TopBar styling and user interaction

src/views/Login.vue

@@ -112,7 +112,7 @@ export default {
         };
 
         const handleLoginSuccess = (result) => {
-            setCookie('login-token', result.data.token);
+            setCookie('token', result.data.token);
             setCookie('user-id', result.data.userID);
             setCookie('username', result.data.username);
             setCookie('user-type', result.data.type);