Bluetooth: controller: Create HCI stubs for CIG/CIS and ISO tests

Put infrastructure for the following HCI commands/events in place:
* LE Setup ISO Data Path command
* LE Remove ISO Data Path command
* Configure Data Path command
* LE Set CIG Parameters Test command
* LE ISO Read Test Counters command
* LE ISO Receive Test command
* LE ISO Test End command
* LE ISO Transmit Test command

Signed-off-by: Asger Munk Nielsen <asmk@oticon.com>
6 files changed