Internet performance monitoring

[jimaek]

Once the dashboard goes live we should track the quality of the user's internet connection and make the data available in the UI as a nice bonus for hosting a probe.

We can test a few popular endpoints and even track our own QA failures.

Eventually we could build pages dedicated to specific ISPs and rank them too

Reference projects we could use:

• https://github.com/cloudflare/speedtest
• https://github.com/stefanwalther/speedy

EDIT: Probably makes sense to add a setting per probe in the dashboard "Enable Internet Benchmarking" because such tests will use a lot of bandwidth. This setting would enable a new tab per probe with detailed stats.
Maybe also we can have a central dashboard with all stats and analytics account wide