E2E: Custom rspec formatter to track QA test suite health

What does this MR do?

• Add custom rspec formatter to track suite health data by exporting metrics to influxdb
  • passed tests
  • failed tests
  • quarantined tests
  • reliable tests
  • retry attempts
  • test run time
• Move formatters to separate module

Screenshots

Example grafana dashboards:

Malformed graph in the beginning is due to some data not exporting correctly during development process

First iteration of tracking health test health metrics: https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/985