serious bug: connection to phones not being properly tracked

src/nimble/NimbleBluetoothAPI.h

@@ -6,10 +6,14 @@ extern uint16_t fromNumValHandle;
 
 class BluetoothPhoneAPI : public PhoneAPI
 {
+protected: 
     /**
      * Subclasses can use this as a hook to provide custom notifications for their transport (i.e. bluetooth notifies)
      */
     virtual void onNowHasData(uint32_t fromRadioNum);
+
+    /// Check the current underlying physical link to see if the client is currently connected
+    virtual bool checkIsConnected();
 };
 
 extern PhoneAPI *bluetoothPhoneAPI;