Fix Jira 768 BLE Appearance Value is 0

[sgbihu]

Fix issue #367
Solution:
Add service and appearance characteristic in the BLE lib.

Changed files
BLEDevice.cpp - check the local device
BLEDeviceManager.cpp - Change the calls
BLEDeviceManager.h - remove appearance member
BLEProfileManager.cpp - Add GAP service and appearance characteristic
BLEProfileManager.h - Add set/get API

[novashah]

On hold until port to V4.2 is completed.

[alext-mkrs]

@novashah, did the transition to 4.2 (I assume that's the nRF FW version) happen?
If not, will it happen, in view of the discontinuation?

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