Add the ability search for specific identities other than identifier field

[gnumoreno]

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

Customers expressed the desire to be able to find identities easier. Currently our search is "starts with" or "exact match" and the identifier is also usually something like a primary key or uuid which makes it hard to find a particular user or identity.

Describe the solution you'd like

I'm not going to describe a solution here just wanted to report the gap in functionality.

Describe alternatives you've considered

Some options that were mentioned: composite key (with the description being the first part), #444, #290, or just adding the description to the main page and making it searchable.

Additional context

Came up in conversations with several customers.

[dabeeeenster]

Dupe of #444