Limit the number of included results for _include, and not only for _revinclude

**User story**
As a user, I want to have the number of _include results (similarly to limiting _revinclude) so that I avoid potential performance issues.

Even though _revinclude is more risky, in terms of performance issue, it would be good to also limit _include results. The same limit applies when using the :iterate modifier.

**Acceptance criteria**
1. When I searching using _include and _revinclude modifiers, then the result sets per each _include/_revinclude parameter is limited by MaxCount, which is currently set to 100 by default.

Start by tracing how the service handles _include and _revinclude parameters, including the :iterate modifier, and locate the existing MaxCount limit currently used for _revinclude. Done means each _include and _revinclude parameter produces no more than the MaxCount results, with the default remaining 100.

Written by the indexing model from the issue text.