Add whad-ble, a CLI utility providing advanced scanning, gattool-like GATT client and device emulation

[virtualabs]

whad-ble is WHAD's BLE default command-line utility driving WHAD-compatible devices that support BLE. It should provide the following features:

• Scan BLE devices and provide a lot of information (BDADDR, address type, RSSI, AD records, etc...)
• Initiate a connection to a device (Random or Public), discover services/characteristics, perform characteristic read/write, etc.
• Emulate a device by generating a JSON fingerprint (all the details about this device) and using it to emulate it through a compatible WHAD device

This tool should work in a terminal, possibly with ncurses.

[virtualabs]

whad-ble has been split into ble-central and ble-periph, the first provides a scanner and a GATT client while the second provides a configurable GATT server and a device profile import/export feature (JSON).

[virtualabs]

for now, considering the BLE basic tools ok for most of the tasks.