Feature request - Change EmulatorJS language

[Hugo1380]

Describe the solution you'd like
To be able to change the emulator's system language.

Describe alternatives you've considered
I have already seen that we can specify a variable in EmulatorJS to change the language: https://emulatorjs.org/docs/languages.

I tried to add it in gaseous-server/wwwroot/emulators/EmulatorJS.html, but the change doesn't take effect. I don't know the code base at all, so I may have implemented the variable incorrectly.