Having destinations in a planner

[h-kt]

As a user, I want to create a planner multiple destinations.

Estimate: 2 days

Backend: Create the Destination model, implement logic for handling the creation request, and ensure proper validation @h-kt

Frontend: Set up requests according to the endpoints documented @hridaimehta , displaying relevant information, while allowing user to edit.

[hridaimehta]

• Work has been pushed for destinations. Functionality for add/edit and delete destination button are up