The default log timestamp is in UTC, this commit allows the user to
convert the log timestamps to their own timezone.
When approaching this problem I originally considered allowing the user
to set any timezone offset of their choice. This would require some
alignment between the device and client that was feeling cumbersome.
In the end we decided to keep things relatively simple and just allow a
simple toggle to convert log entries upon reading the logfile on the
device.
The default log timestamp emitted by the client remains UTC/Zulu
Advances #2