zfs list: add '-t fs' and '-t vol' options (#15883)

Because "filesystem" and "volume" are just too long!

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15864
(cherry picked from commit a5a725440bcb2f4c4554be3e489f911e3dd60412)