IOS - fastlane deliver, localized app store description from strings file?

Question

I am ready for the application to be localized in other languages.

I use NSLocalizedStringWithDefaultValueto provide default text in code, although I think none of this can be relevant.

I do not add localized text directly to the nib or storyboard, all in my lines file.

I'll probably upload them to the localization site.

Therefore, I would like to use fastlane to upload screenshots and metadata.

However, I would like to find a method in which I can get values ​​from my string files.

So, I think, my question is: how can I get the value of my lines in a text delivery file?

Or is there a better / faster approach I should use?