Localization: Split strings into multiple file

[arky]

Currently all the translation strings are stored in a single file. This makes it difficult to prioritize those strings that are most important for localizing first.
Perhaps it would be great to start thinking of split strings into different files such as base, UI etc. This would enable us to guide the localizers to work in order of their importance (User facing strings translated first).

https://support.crowdin.com/file-management/#prioritizing-files

[arky]

I think this should be also done for mapeo-desktop project as well in future.

[arky]

@gmaclennan Aliya pointed out there is another page with localization (https://docs.mapeo.app/~/changes/iOm3AFqdVz8g9c1IDE5m/complete-reference-guide/customization-options/translating)

Perhaps we could decide a good place for localization and merge the content.