Begin faction system

Server/Entities/User.cs

@@ -31,6 +31,7 @@ namespace reallife_gamemode.Server.Entities
         [StringLength(64)]
         public string Email { get; set; }
         public AdminLevel AdminLevel { get; set; }
+        public Faction Faction { get; set; }
 
         public bool IsAdmin(AdminLevel level) => AdminLevel >= level;
     }