client: Add adv SupportedFeatures to bluetoothctl

client: Add adv SupportedFeatures to bluetoothctl

This change adds SupportedFeatures to be shown in "show" option of
bluetoothctl. It was tested with and without kernel support for features
to verify that they are shown or not shown correctly.

Change was tested by verifying SupportedFeatures were populated
correctly in bluetoothctl on hatch and kukui chromebooks

Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Anuj Jain <anuj01.jain@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>