Feature: Log binlog events to disk

[fulghum]

Major changes:

• Moved binlogging initialization code from sqlengine to server, so that bin logging only happens when in sql-server mode.
• binlogProducer now sends events to the new logManager type that writes binlog events to files on disk. binlogStreamer now reads events from those logs and streams them to replicas (instead of receiving events directly from binlogProducer).
• DoltBinlogPrimaryController now validates that the missing GTIDs from a replica are available in the binlog files and sends an error if the primary doesn't have enough binlog data on disk to get a replica in sync.

[coffeegoddd]

@fulghum DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
8b29daf	ok	5937457

version	total_tests
8b29daf	5937457

correctness_percentage
100.0