Hi @xdesig. Thanks for your interest in contributing to the Arduino IDE 2.x translation project.
We have an unfortunate limitation on which languages it is possible to localize Arduino IDE 2.x to.
The IDE's internationalization system is designed to extend VS Code "language packs". This approach is beneficial because it allows us to leverage the existing internationalization and localization work on the universal components of the Arduino IDE UI. This makes it much less work for the Arduino developers and translators because we only need to be concerned with the strings that are specific to the Arduino IDE (e.g., "Sketchbook"). However, this also means that we are only able to add a language if there is an existing VS Code language pack available.
You can see the available language packs here:
https://open-vsx.org/?search=&category=Language%20Packs
Unfortunately, there isn't an existing Galician VS Code language pack. This means that someone would need to create such a language pack. It would not be appropriate for us to start on the Arduino IDE-specific Galician translation work before a Galician language pack was available because the valued work of the translators only comes to fruition once there is a release of the Arduino IDE localized to that language.