Add scaffolding for doing append entries
Paramaterize messagse over the return of the state machine
Modify API to only append one element and add set scaffolding for pushing append entries out
Add suspended appende entries API
Give append entries response implementation for candidate and followers
Initial supprot for append entries responses
Add support for running state machine operations and tracking the commit index
Move defining the next_idx to place where the entry is read and sent
Merge branch 'feature-add-leader-append-entries'