Add a front-end library versions summary to the system status report

Problem/Motivation

There is, as far as I can tell, no way in the UI to get a report of front-end asset versions.

Steps to reproduce

Proposed resolution

Add reporting for Core's assets. Expand this to third party assets as part of #2873160: Implement core management of 3rd-party FE libraries.

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet