Implement Bluetooth Low Energy (BLE)

[FlorianGille]

Description

This PR will add everything we need to develop a mobile application which is using BLE

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

1. You must have a device on which you are able to connect with BLE
2. Update the PERIPHERAL_IDENTIFIER variable with the name of your device
3. Enter in Bluetooth Helper (by developer menu)
4. You should be able to connect to the device and see services and characteristics

Platforms tests:

• [ ] I tested on Android
• [ ] I tested on iOS

Screenshot of the result

Checklist:

• [x] Add Bluetooth Helper
• [x] Add Bluetooth Context in order to be able to retrieve the bleManager of everywhere
• [ ] Add documentation in README about Bluetooth usage