Refactored the unicast audio client sample to use a
separate thread for TXing, rather than the system workqueue.
This allows us to do blocking waiting operations like
buf = net_buf_alloc(&tx_pool, K_FOREVER);
and also splits the responsibility of TXing to a new
file as well.
LC3 handling have also been moved to a new file, so
that it does not pollute the source code for non-LC3
supported builds. This also fixes various issues and
improves the LC3 handling in the sample.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
038fc8b6ac