[x] the timestamp of the athlete's first connection
[x] the current connection status (CONNECTED / AWAY)
[x] the last seen timestamp
[x] a boolean method "isInitialized()" that returns true if the connected device has published some info (in this case it is an athlete for sure), otherwise it returns false (in this other case it could be a device that is connected to the trainer GATT server for other reason, and not an athlete).
The athlete obj should contain: