Update shared groups REST API to include all the supported params

Problem

Follow-up from !155251 (merged) and #424959 (closed).

• We want to add more params support.
• Refactor notes !155251 (comment 1967928431)

Context: !155251 (comment 1942541777)

Proposal

Make the following additional attributes available for https://docs.gitlab.com/ee/api/groups.html#list-a-groups-shared-groups:

Attribute	Type	Required	Description
skip_groups	array of integers	no	Skip the group IDs passed
all_available	boolean	no	Show all the groups you have access to (defaults to false for authenticated users, true for administrators); Attributes owned and min_access_level have precedence
statistics	boolean	no	Include group statistics (administrators only). Note: The REST API response does not provide the full RootStorageStatistics data that is shown in the UI. To match the data in the UI, use GraphQL instead of REST. For more information, see the Group GraphQL API resources.
owned	boolean	no	Limit to groups explicitly owned by the current user
min_access_level	integer	no	Limit to groups where current user has at least this role (access_level)
top_level_only	boolean	no	Limit to top level groups, excluding all subgroups
repository_storage	string	no	Filter by repository storage used by the group (administrators only). Introduced in GitLab 16.3. Premium and Ultimate only.
marked_for_deletion_on	date	no	Filter by date when group was marked for deletion. Introduced in GitLab 17.1. Premium and Ultimate only.

Implementation plan

All these params might be present in GroupsFinder or another similar finder. We can move the comment methods to a module/concern and reuse it.