refactor: create types instead of using models

app/controllers/links_controller.ts

@@ -8,6 +8,7 @@ import {
 } from '#validators/link';
 import { inject } from '@adonisjs/core';
 import type { HttpContext } from '@adonisjs/core/http';
+import db from '@adonisjs/lucid/services/db';
 
 @inject()
 export default class LinksController {
@@ -111,6 +112,11 @@ export default class LinksController {
     });
   }
 
+  async getTotalLinksCount() {
+    const totalCount = await db.from('links').count('* as total');
+    return Number(totalCount[0].total);
+  }
+
   /**
    * Get link by id.
    *