tools/btmgmt: Add "--uuid" option to add-adv
tools/btmgmt: Add "--uuid" option to add-adv

This patch adds the --uuid (-u) option to the add-adv command. This
allows callers to specify individual 128-bit or 16-bit UUIDs to be
included in the "Complete List of Service CLass UUIDs" field of
advertising data.

pkarasev3/bluez,silent-snowman/bluez,silent-snowman/bluez,mapfau/bluez,silent-snowman/bluez,ComputeCycles/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,silent-snowman/bluez,mapfau/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,pkarasev3/bluez,mapfau/bluez,pkarasev3/bluez