Fixes #5088 #2524 - adding taxonomy related parameters to apidocs

- new param group `taxonomy` for taxable resources
- new param group `taxonomy_scope` for index actions of taxable resources
- pagination and search param moved to a group `search_and_pagination` to reduce duplicities
For Foreman it does not make much difference, but if it is reused as is  in a plugin (e.g. Katello) it wouldn't work. Therefore I'd prefer to keep the absolute module path.