Bluetooth: Add Bluetooth init sample

This patch adds a very simple application for demonstrating the use of
the bt_init() API. Right now this is just tested to work with qemu and
the HCI UART driver with the help of the btproxy tool on the host OS
side. More information is available in the samples/bluetooth/README
file.

Change-Id: I03f92d158e9e5d57275241502bb8fa94350fc335
Co-authored-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
5 files changed