System Status page and API (#1812).

[ahtik]

Changes

Introduced a System Status page to check the basic telemetry of the running system.

Covering with Backend and Cypress tests is still in progress: trying to figure out to what extent it can be done in the current test running environments.

Checklist

• All querysets/queries filter by Team (if this PR affects any querysets/queries)
• Backend tests (if this PR affects the backend)
• Cypress E2E tests (if this PR affects the front and/or backend)

[paolodamico]

This might be a good opportunity to reconsider the UX of settings, we're adding a lot of extra menus and we already have a lot of different sections on the main setup tab. Definitely worth doing some work here, but not sure if we have time to adjust the UX in this particular PR, thoughts ?

CC @timgl

[Twixes]

This is the new layout at #1562, replacing current
<Settings<Setup, Annotations, Licenses>, Team>
with
<Organization<Members, Invites, Licenses>, Project, Me>:

@paolodamico

[paolodamico]

Re @Twixes, thanks for the context, giving it more thought this is definitely a different topic, maybe more suited for #1775, let's just keep that conversation there.

[Twixes]

Not sure what you think about fitting this into this feature, but event ingestion stats would be quite useful (e.g. number of events ingested daily/weekly/monthly)