Spaces Stats Endpoint

[patrick-ogrady]

It would be nice to be able to fetch:

• number of claimed spaces
• number of expired spaces
• number of moved spaces
• number of set keys
• number of deleted keys
• total value set
• total value expired

This would involve a database migration for existing spacesvm's and a couple new singleton db values.

[rafael-abuawad]

Can this be stored directly on spacesvm? Using simple embedded logic?