User story
As a user, I want to use :iterate modifier for _include and _revinclude so that I can iteratively include results by executing a single query.

Acceptance criteria

1. When :iterate modifier is used, the iterative results are included in the results following the FHIR spec
2. When using :recurse modifier, it returns equal results to when using :iterate, on all versions, and considered an alias
3. When using :iterate (:recurse) each iterative result set should be limited by a max nu,ber of results
4. When executing recursive queries (circular references) , the recursion depth needs to be limited to avoid performance issues