Add support for MySQL 8.0 binlog events

MySQL 8.0 has added the following new events in the MySQL binary log

PARTIAL_UPDATE_ROWS_EVENT
TRANSACTION_PAYLOAD_EVENT
HEARTBEAT_LOG_EVENT_V2

• PARTIAL_UPDATE_ROWS_EVENT is used by MySQL to generate update
  statements using JSON_SET, JSON_REPLACE and JSON_REMOVE to make
  update of JSON columns more efficient. These events can be
  disabled by setting 'binlog-row-value-options=""'
• TRANSACTION_PAYLOAD_EVENT is used by MySQL to signal that a
  row event is compressed. It an be disably by setting
  'binlog_transaction_compression=0'.
• HEARTBEAT_LOG_EVENT_V2 is written to the binary log many times
  per seconds. It can be ignored by the server.