[Feature] Show Duplicates

[ann4belle]

Is your feature request related to a problem? Please describe.
It's rather frustrating to have to go item by item to discover what extra parts/blueprints I have when I want to list on the market or sell to Baro.

Describe the solution you'd like
Ideally, a filter (like "Hide Vaulted") or a "Duplicates" sort that would only show duplicate items. For example, if I have two Nidus Prime Blueprints, it would show that, as only one is required to build Nidus Prime. Additionally, if a Prime is checked on the Equipment screen, WFInfo would assume you've already build that Prime and don't want to build any more - and any components of that Prime that you acquire would be listed as duplicates.