cnx_adopt_lock_t struct

#include <include/Cnx/sync/Mutex.h>

cnx_adopt_lock_t is a tag type intended for use with scoped lock guards such as CnxUniqueLock and CnxSharedLock, to communicate that the given mutex has already been locked and thus the guard does not need to acquire the lock itself. This is in contrast to the default behavior, where a lock guard will acquire the lock upon its construction.