PageSize 0 support

[Ben555555]

Is your feature request related to a problem? Please describe.
Currently it's not possible to use page size of 0 without an exception being thrown.

Describe the solution you'd like
It would be nice if we could use PageSize 0, so we would get an empty list but the total count of items. This can be useful for queries where we don't need the actual data but only the count of total items. We can then reuse the same methods / endpoints to either get the items or the count or both.