Feature: Manage map links by moving maps on a board

[Palbolsky]

Description

This PR implements the new version of maplink. The maps are now directly visible in the board and the user can move it. The old version is still available for users who do not use Tiled.

Version 2 creates maplinks differently than version 1. Version 1 creates maplinks on demand in the maplink navigation. Version 2 creates and deletes maplinks when a map is created or deleted.

A migration has been added to ensure that all maplinks are present. The constraint for interior zones has also been removed.

UX/UI improvements may be made later.

Closes #70

Tests to perform

• Create a map create the maplink associated ;
• Delete a map delete the maplink associated ;
• The user can move the map in the board ;
• The user can delete a map from the board ;
• The user can add a map in the board ;

Screenshot