on listing api calls return an header with the total number of elements (to allow easy ui pagination)

[chicco785]

Is your feature request related to a problem? Please describe.

From the user interface it is not possible to compute the number of existing values, and hence display correctly the related information.

Describe the solution you'd like

Compute total elements linked to a query (without limit and offset) and return the value in a header (e.g. Counter)

Describe alternatives you've considered

N/A

Additional context

N/A

[chicco785]

cf https://github.com/orchestracities/auth-management-ui/issues/127 assigned to @Valecant

[c0c0n3]

closed by #202