chore: add category for AISAY app (#945)

* Add category for AISAY app

## Screenshots
### Before
<img width="624" alt="Screenshot 2025-04-17 at 8 23 36 AM"
src="https://github.com/user-attachments/assets/e53ab210-3d77-4c34-919d-6ca541719325"
/>

### After
<img width="639" alt="Screenshot 2025-04-17 at 8 23 12 AM"
src="https://github.com/user-attachments/assets/fb77e6d0-cd43-4cc9-9f5e-c8fe765b084e"
/>

Author: kevinkim-ogp

packages/backend/src/apps/aisay/index.ts

@@ -9,6 +9,7 @@ import queue from './queue'
 const app: IApp = {
   name: 'AISAY',
   key: 'aisay',
+  category: 'others',
   description:
     'Extract data from documents such as invoices, bank statements, cheques, and more',
   iconUrl: '{BASE_URL}/apps/aisay/assets/favicon.svg',