Feat: enable users to be able to set SoulverCore locale

[rflrkn]

Is your feature request related to a problem? Please describe.

In many regions, e. g. the commonly used decimal separator is a comma (e.g. in large parts of Europe), instead of a point (like for example in North America). So three and a half would be written as 3,5 instead of 3.5. However the Vicinae integration of SoulverCore doesn't account for that, which makes using it quickly difficult for me.

Describe the solution you'd like

SoulverCore provides a rather easy way to set locales, and it also comes with a predefined set of locales. It would be really nice, if users could set the SoulverCore locale within the calculator settings of Vicinae.

Additional context

Further information can be found here: https://github.com/soulverteam/SoulverCore?tab=readme-ov-file#international

[aurelleb]

I see, that should pretty doable but my understanding was that it should automatically pick it up from your system locale, are you using anything special in that regard?

[rflrkn]

No, not really. I'm using KDE Plasma on Arch and - and I just double checked - I set all my settings accordingly:

[aurelleb]

ok interesting, then I should be able to provide this as an option. Although that will require updating the soulver-cpp bindings on your end when I do it.

[rflrkn]

Would be very cool!
Updating those bindings should be doable haha