Add Console logs to display when all Pins have loaded

[ryanfchase]

Overview

We need to add logging into our site to show when all Service Requeset Pins have rendered

Action Items

• add log for "pin rendering time"

References / More Info

• See performance.now() on how to collect time info (e.g. checking database loading time): https://github.com/Skydodle/311-data/blob/e0859fed99ebbdf09b07bf72ed74a19f117203f7/components/Map/index.js#L80
• look into mapbox `map.on('load', ...)
• MapboxGL: https://docs.mapbox.com/mapbox-gl-js/api/map/

[Skydodle]

Added time tracking logs for table creation, data loaded, and map loaded which were completed and merged in PR #1711.

@ryanfchase Moving this ticket back to Prioritized Backlog so someone can finish adding time tracker for pin rendering.