Filter package registry by version

Context

In https://gitlab.com/gitlab-org/ux-research/-/issues/1986 it was discovered that users often struggle to find the package they're looking for when looking at the package list page. (insight)

Package list page

Users are often looking for a specific package, but the sort/filter is lacking for them. Users mentioned wanting to filter by the version

Proposal

• Allow users to search/filter by the package version. NOTE: this may not be relevant anymore if we implement Simplify the packages list by consolidating ver... (&8924) first.

Implementation guide

• Update app/assets/javascripts/packages_and_registries/package_registry/components/list/package_search.vue to add new GlFilteredSearchToken token to the tokens array
• Update app/assets/javascripts/packages_and_registries/package_registry/graphql/queries/get_packages.query.graphql to pass packageVersion as argument
• Update extractFilterAndSorting in app/assets/javascripts/packages_and_registries/shared/utils.js to return version