## fixes https://github.com/KILTprotocol/ticket/issues/2794

* i decided to remove the mashnet naming entirely. Mashnet is the old
thing from the very beginning.
* the mashnet-node was renamed to standalone-node since it's not
specific to kestrel (there could be a second runtime executed in with
this node, like we do it for the parachain-node)


Co-authored-by: Antonio <antonio@kilt.io>