Adding new Event to track when a request is complete

[jwoertink]

Purpose

Ref: luckyframework/breeze#33

Description

This PR adds in a new Pulsar event that will allow Breeze to subscribe and get the request duration. I've also refactored the LogHandler a little to clean up some of the logic with skipping logging.

With that, the time that was logged before included the time it took to print to the logs that a request was starting. That time is irrelevant though. By moving that up, we can just use Time.measure which will measure how long it takes to run the rest of the middleware stack. In a future PR, I'll be adding in a unique request ID that will be tracked in here so we can join the before/after logging

Checklist

• - An issue already exists detailing the issue/or feature request that this PR fixes
• - All specs are formatted with crystal tool format spec src
• - Inline documentation has been added and/or updated
• - Lucky builds on docker with ./script/setup
• - All builds and specs pass on docker with ./script/test