Enable easy bulk-editing of prefab data

[AMZN-Liv]

Is your feature request related to a problem? Please describe
There is not currently an out-of-box solution for comparing large numbers of prefabs and making edits to multiple prefabs at a single time.

Describe the solution you'd like
A spreadsheet-style interface that makes it easy to compare and edit large numbers of prefab entities quickly.

Describe alternatives you've considered
A plugin or extension to existing spreadsheet tools