Rename node service to consensus service [#3224]
Closes #3224 (closed). Renames node service and associated types to consensus service (s/node/consensus/g). This opens the door for a node service that is focused on the Accumulate/P2P node instead of the Tendermint/consensus node. And I added some comments, Paul.
Changelog: refactor
Edited by Ethan Reesor