Remove usage of Kconfig symbol `CONFIG_BT_DEBUG_LOG` from samples. It
has been deprecated since this PR:
https://github.com/zephyrproject-rtos/zephyr/pull/56183
The Kconfig symbols has been replaced by `CONFIG_LOG=y` on most of the
cases. Or it has been removed when not needed anymore.
Signed-off-by: Théo Battrel <theo.battrel@nordicsemi.no>
Add new sample application for direction finding to show
how the functionality works in connected mode for central role.
Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>