ref: ED008

User story

Is your feature request related to a problem? Please describe.
As an admin I'd like to have more information about user activity on the platform, and know how many people habe been online, whether they are visitors participants or admins.

Describe the solution you'd like
As an admin, I want to have a user counter divided between administrators and participants, and see activity by last month, last week and last 24h.

Note: This is closely related to issue #5725 in terms of design

Describe alternatives you've considered

Additional context

URL: https://www.decidim.barcelona/admin

Does this issue could impact on users private data?

No

Acceptance criteria

• As an admin I can see the number of participants and admins who were online in the last 24h, last week and last month.