boost: import lockfree prototype

Signed-off-by: Tim Blechmann <tim@klingt.org>
supernova: sndfile backend - read only full frames from write queue

Signed-off-by: Tim Blechmann <tim@klingt.org>
supernova: nrt synthesis - dump peaks after nrt synthesis

Signed-off-by: Tim Blechmann <tim@klingt.org>