the collection of descriptions of our cli tools was dropped in
04e24b14f0
I'll readd it to the sysadmin.rst, since the (related) service daemons
also got moved here.
additionally add the newly added cli-tools to both
command-line-tools.rst and command-syntax.rst, and put both in the same
order
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
