Filter scoped labels with a wildcard

Problem to solve

There is no way of filtering by all labels under a given scope. This would be very useful in order to find all issues relevant to a given scope without having to apply all labels

Intended users

gitlab-ce9335215 gitlab-ce9335209

Further details

Proposal

Add ability to filter by a scope in order to return all issuables matching a given group of labels.

As a user, I'd like to search label: ~pajamas:: to return all issues containiner a label with the pajamas::* scope:

Permissions and Security

No change to permissions

Documentation

✅ Added in https://docs.gitlab.com/ee/user/project/labels.html#filter-by-scoped-labels

Testing

What does success look like, and how can we measure that?

Links / references

Release notes

Filter scoped labels with a wildcard to quickly find issues, epics, or merge requests that all share the same key from a set of scoped labels. You can also pair wildcard filtering with != is not to easily filter down items that do not have any label from a set of scoped labels. To filter with a wildcard, just append * after typing in your scoped label key (ex: label::*).

https://docs.gitlab.com/ee/user/project/labels.html#filter-by-scoped-labels