added search into all selects on all forms

src/app/components/update-loan/update-loan.ts

@@ -84,4 +84,8 @@ export class UpdateLoan implements OnInit {
         await this.fetchUsers();
         await this.fetchBooks();
     }
+
+    filter(input: string, option: any) {
+        return option.nzLabel.toLowerCase().includes(input.toLowerCase());
+    }
 }