Add internationalization (i18n) support for multilingual UI (especially Chinese)

[tachikoyu]

HI, I'm from China and been playing with it, but everything's in English with those hardcoded strings. A bunch of us Chinese photographers would go nuts for a Chinese version (and probably other languages too).

Any chance we could toss in some i18n support? Like react-i18next or whatever's easy – just so we can slap translations in JSON files instead of hacking the code every time.

[Kondorfire]

It's an excellent idea, since many of us could help with the translations, making it easier to internationalize the program and reach more people.

[YannBirba]

Yeah I'm ready to be involved in this also

[YannBirba]

Started working on it in #750 If you can give your though on it, it will help so much.

Starting with English, French and Spanish for now.

[YannBirba]

Added Chinese, @tachikoyu would you be okay to review the chinese ai translations once it'll be okay on my side and the repo owner side ?

Tell me if you're okay in the PR.

Looking for someone to review spanish, jump to #750 if you want to get involved !

[Kondorfire]

I could review the translation into Spanish with great pleasure!!!

[YannBirba]

I could review the translation into Spanish with great pleasure!!!

Thank you ! I will mention you in the PR when it will be ready.
Waiting for maintainer validation for now.

[ardamafzal]

I built a small tool to translate JSON i18n files without breaking placeholders, might be useful here
Would love any feedback
Link - https://localizejson.lovable.app/

[tcoulon]

I'd be happy to help for a french translation. Very impressive software so far, it's great to have that on Linux :)

[ardamafzal]

Thank you so much, if you have any json files already that you could upload and test the output that would be amazing. I found myself encountering issues with placeholders and poor translation so this tool is great for me. Want to see if it can be beneficial to others.