Add support for multiple languages

[shirayuki]

Is your feature request related to a problem? Please describe.
Currently, PEV2 is available only in English. While this is fine for many users, adding support for multiple languages would make the tool more accessible to a wider audience, especially for those who are not fluent in English.

Describe the solution you'd like
I would like to request support for multiple languages in the PEV2 interface. A possible implementation could include:

• Using JSON or another format to store translation files
• Providing a language selection option in the settings
• Allowing the community to contribute translations via GitHub

Describe alternatives you've considered
An alternative could be browser-based translation extensions, but they may not always work well with UI elements. Native multi-language support would provide a better user experience.

Additional context
I would be happy to contribute translations if a system is implemented.

[Krysztophe]

I'm not sure this is so useful, but I have no problem with English myself.

I'm interested if there is French translation.