feat: limit windows per app

[decodism]

It could be useful to limit the number of windows in a shortcut with all the apps. A shortcut with the active app can still be used if necessary.

[lwouis]

Hi,

Thank you for sharing this PR.

I think this PR overlaps a bit with #337. I think it would appeal to user who want some kind of group-per-app, hierarchy, or drilldown capability. Of course it's more crude since it's truncating data. So it would help only a subset of the people looking for #337.

As it stands, I think it adds to the issues with #351. I think it's interesting, but not comprehensive enough to warrant adding more settings, as it stands. @Allsochen is currently working on #351. Do you have an opinion on this perhaps @Allsochen?

Thank you

[decodism]

This could perhaps be a stopgap solution before what's planned.

[lwouis]

This could perhaps be a stopgap solution before what's planned.

@Allsochen is working on #3468 currently. I think the long-term #337 or a stop-gap workaround should be thought in the context of this work. In another words, if we would merge MR this today, we would need to add migrating it to the new preferences UI in #3468