[Request] Enable Multi Select on Build Selection Screen

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• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

Is your feature request related to a problem?

It's frustrating to have to deal with each one of these manually

Describe the solution you'd like

It would be nice if POB had standard multiselect functionality.

Standard OS-level functionality would be nice: click and hold Shift to select consecutive items, and hold down Control to select individual items.

Describe alternatives you've considered

n/a

Additional context

If you wanted to get fancier, you could experiment with a Gmail-style checkbox UI and have a star/favorite functionality, but I think that is more than what people would want, and I assume it would take longer to implement.

Das Issue nennt keine Dateien oder Tests; beginne damit, den Bildschirm zur Build-Auswahl und den Einstiegspunkt für die Eingabeverarbeitung in der Lua-Anwendung zu finden. Überprüfe, wie der Auswahlstatus dargestellt wird, und bestätige dann, dass auf Windows aufeinanderfolgende Elemente mit Shift und einzelne Elemente mit Control ausgewählt werden können.