Adds new package that can be used by client and server RPC endpoints to
facilitate monitoring based off of a logger

clean up old code

small comment about write

rm old comment about minsize

rename to Monitor

Removes connection logic from monitor command

Keep connection logic in endpoints, use a channel to send results from
monitoring

use new multisink logger and interfaces

small test for dropped messages

update go-hclogger and update sink/intercept logger interfaces