Fully implemented authentication
Fully implemented return codes and errors
Fully implemented firestore database data
Created 'fetch_servers' and 'set_subdomain' routes for front-end use.
[+] Security patch, requests will not return anything if not properly authenticated
[~] Reworked the route system entirely
[+] TODO : firebase_manager.py error handling
[+] TODO : global error log using file_manager.log_error(error_type:str, error_message:str)
Signed-off-by: Charles Le Maux <charles.le-maux@epitech.eu>