13 14 create load map

[cfstcyr]

READ THIS BEFORE REVIEW:

What was done:

• Created models for everything related to map (Position, Intersection, Map, etc.)
• Created services to load map and handle map data
• Created IHM elements to load the map
• Added relation between services and views when adding markers on map

What to review:

• src/models/map/: Every models in this directory. These are the models for the map.
• src/services/map/map_loader_service.py: This service's job is to load the map into our models. It reads from an XML and pass the created model to map_service.py.
• src/services/map/map_service.py: This service's job is to "keep" the information about the map. The map is saved in this service using an observer so that others can subscribe to when a map is loaded or unloaded. This service also handles the map markers. Its job will be to dispatch the computing to place it at the right place on the map, but for now, we just place it where the user clicked.

You can look at the changes in src/views/, but it's really not that important.

What to ignore:

• Some changes had to be made to the navigation system, basically, the way I implemented it the first time caused circular dependency issues, so I had to change it. It was a lot of small changes so it's really not that interesting to review.