Use spatie Query Builder for relationships

[Spatie Query Builder](https://github.com/spatie/laravel-query-builder) can be used for loading relationships in a faster manner.

VIDEO 21 - [Laravel 10 For REST API's](https://www.udemy.com/course/laravel-for-rest-apis/learn/lecture/37510248#overview)

VIDEO 48 - [Laravel 10 For REST API's](https://www.udemy.com/course/laravel-for-rest-apis/learn/lecture/37652044)