Feat: add support of dialogs through zenity

[ChugunovRoman]

[diegosomar]

The import button does not open the Zenity dialog, even though it is checked in the settings. Figma version: 0.9.6 installed via Flatpak

            .-/+oossssoo+/-.               diegoramos@diegoramosNTBK 
        `:+ssssssssssssssssss+:`           ------------------------- 
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        `:+ssssssssssssssssss+:`
            .-/+oossssoo+/-.