[MM-54852] Add mmctl command to download Support Packet (#25419)

* Add mmctl command to download Support Packet

* Simplify file name

* Revert "Simplify file name"

This reverts commit 17084a3350605134ba338ffa25ce43a7c9482f1d.

* Fix docs

server/cmd/mmctl/docs/mmctl_system.rst

@@ -41,5 +41,6 @@ SEE ALSO
 * `mmctl system getbusy <mmctl_system_getbusy.rst>`_ 	 - Get the current busy state
 * `mmctl system setbusy <mmctl_system_setbusy.rst>`_ 	 - Set the busy state to true
 * `mmctl system status <mmctl_system_status.rst>`_ 	 - Prints the status of the server
+* `mmctl system supportpacket <mmctl_system_supportpacket.rst>`_ 	 - Download a Support Packet
 * `mmctl system version <mmctl_system_version.rst>`_ 	 - Prints the remote server version