Plug the Front-end to your own health data API

This Front-end is developed in a way that every query to an API is stored in a single directory, the "services" directory: https://github.com/aphp/Cohort360/tree/develop/src/services

This way, anyone who needs to modify how the Front-end interracts with its own APIs can easily construct its own "context" directory (see the documentation directly on Github) and develop its own queries.

#TODO : schéma