[ENHANCEMENT - Game Editor] Improved Error Handling + Reporting

[mmicciolo]

Javascript Global Exception Handler for UI + Improved Backend Error Handling

Bug reporting.

When exceptions are thrown from the UI, there is no way to tell unless the developers console is open. This will add a logging feature that will log exceptions for us.

Describe the solution you'd like
https://blog.sentry.io/2016/01/04/client-javascript-reporting-window-onerror
window.onerror and then REST call to wlcp-metrics to log the error report

Describe alternatives you've considered
n/a

Additional context
n/a