Unlock demo upgraded with latest RVI Core Android SDK including TLS

Demo now uses TLS, certs, keys, and creds to connect with backend server/vehicle

Unlock demo now connects to Raspi RVI endpoint using the RVI SDK Bluetooth

RVI SDK now uses Bluetooth connection to connect to remote nodes.

Port of provisioning server TCP link to RVI SDK

Ported the provisioning server code to the RVI SDK. Lots of clean-up of code and encapsulation of server interaction/API to one wrapper class and some json-serializable POJOs. Unlock demo now uses the RVI SDK for all communication to the provisioning server RVI node.

Bug fixes for Unlock demo "Revoke Key" functionality

Fixed all the bugs related to revoking keys: Clicking revoke button no longer throws exception, parameters no longer hard-coded.

JLR skinned, working version of the Unlock demo

Working version of demo with cleaned-up Bluetooth ranging algorithm, bug fixes, and sharing to JLR members.