[Synthetics] Enhance Synthetics alerts detail pages !!

[shahzad31]

Synthetics alerts details pages are pretty basics at the moment, we need to provide comprehensive investigation data in alerts details page of synthetics to provide user all the context, right now we direct user to error detail page within synthetics, we should bring all the data into alert detail page.

we should bring following data from error details page within synthetics

Error timeline, screenshot and list of failed tests

Step by step details

Monitor duration and data

Last test run detailed network data

Test run logs

Performance breakdown for browser monitor

Waterfall data

Agents logs for private location

[elasticmachine]

Pinging @elastic/obs-ux-management-team (Team:obs-ux-management)