refactor: update model template

Author: thetutlage

templates/model.txt

@@ -3,4 +3,9 @@ import { BaseModel, column } from '@ioc:Adonis/Lucid/Orm'
 export default class ${filename} extends BaseModel {
   @column({ isPrimary: true })
   public id: number
+
+  public static $columns: Pick<
+    filename,
+    'id'
+  >
 }