init_logging
Instead of requiring the `LogRotationOpt`, it now requires an `Option<LogRotationOpt>`. This makes it much more easy to use the interface when someone isn't interested on the `LogRotationOpt`'s
* Use flexi_logger; Add log rotation * Add default rotation; Add FlexiLogger error * Fix compilation error * Remove logging to stdout if it's not a tty * Fix formatting Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com> * Remove needless debug statement * Default to unlimited size for log rotation * Add more comments about log-age option * Remove unused variable * Fix typo in comment Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>