Backend: Create Controller, Service and Routes for Calendar

[ElenaCherpakova]

Task: Create Calendar Controller, Service and Routes

Description:

Add routes for managing Kid, use the requirements in GitBook for that

Develop a backend service to handle calendar functionalities within the application. This service will manage all operations related to calendar events, including creating, updating, deleting, and retrieving events

Develop a controller for managing calendar-related operations within the backend service. This controller will handle incoming requests for creating, updating, deleting, and retrieving calendar events. The controller will connect and leverage the logic already written in the service layer to perform these operations effectively.

[AnnaSolovykh]

@Skyline857 better start with service or do service and controller at the same time to make testing easier