Install /usr directory to attached nvme drive

if the concern is just to have /usr folder at nvme
it can be done with putting corresponding instruction into the /etc/fstab file for permanent use
or it could be mounted manually with mount command for one time use

On the other hand, as it has been pointed out the entire OS could be moved to nvme for fastest boot.
I hope nvidia within time will incorporate the option to boot directly from nvme/ flash nvme directly with flash.sh
as for now we have to use the proposed by Jim solution