Roles - update filters, add sort

[himdel]

Issue: AAH-2791
Depends on ansible/galaxy_ng#1922 (merged)

add a HubListToolbar component to wrap CompoundFilter, AppliedFilters, Sort & top Pagination

use instead of CollectionFilter in role list & role namespace list & role namespace detail role list screens
use standard parseParamString + updateParams handling

update API wrappers & calls to use default base api methods where applicable, handle URL construction there, translate sort

add missing notfound, emptystatefilter, alerts, error handling

available filters & sorts:

• role list
  • filters: ?keywords, ?namespace, ?tags
  • sorts (?order_by=-created): name, created, download_count
• role namespace list
  • filters: ?keywords
  • sorts (?sort=-created): name, created
• role namespace detail role list
  • filters: ?keywords, ?tags (+ hardcoded ?github_user)
  • sorts (?order_by=-created): name, created, download_count

---

(TODOs for later:

• use shared listitem template in legacy, like collection list item
• use hub-list-toolbar for collection list items too (allow switching collection sort), and in namespace list
• grey background behind section missing in legacy)

[himdel]

(fixed by #4424)