[REQ] Cmd shortcuts instead of Ctrl+Shift

[probablykasper]

Is your feature request related to a problem? Please describe

Using Ctrl+Shift for shortcuts is pretty unusual. Personally I have custom Ctrl+Shift shortcuts because almost no apps use those, but it interferes with Keka.

Describe the solution you'd like

Would be nice to see Cmd used instead. Maybe Cmd+Alt for zip and xz.

Something else that could also be done is add them to the menu bar so that they'd be customizable