[Feature Request] Add an option to the "Show Differences" page to only show the differences on one side

[wwwwwwari]

In Compare Icon Packs > Show Differences, currently it lists differences on both sides. I'd like to be able to see only the missing icons on one side.

For example, if I select Arcticons as the first pack and Delta the second, it will show something like this:

I'd like there to be options to include only icons that Delta has but Arcticons doesn't, and vice versa.

I'd imagiine something like this in the UI:

[Kaiserdragon2]

This seems like a good idea i will try to implement that.