Favorite/pin/bookmark/star a feature flag per user.

[gnumoreno]

Is your feature request related to a problem? Please describe.

Users are frequently working on limited number of features. Our feature list currently is sorted by name ascending. It would be nice if users could pin/favorite/bookmark/star some features to stay at the top of the list.

Describe the solution you'd like

Add a way to pin features at the top of the list.

Describe alternatives you've considered

While this is not implemented, one workaround is to create a lable and apply to the feature flags the user wants to see and just filter by the lable.

Additional context

This should be implemented for the features page and also in the identities page under a particular user.