Add Gutenberg mobile strings for translation

[Tug]

This PR manually adds the strings that needs to be translated in gutenberg-mobile to res/values/strings.xml which will thus be added to the WordPress Android glotpress project.

[wpmobilebot]

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[koke]

This looks good to me, but I don't have enough Android experience, I'd like to see a 👍 from @wordpress-mobile/platform-9

[loremattei]

Yep! Strings look good to me.
The CI is failing because of the linter. Maybe the regex in lint.xml doesn't match?

[koke]

Maybe the regex in lint.xml doesn't match?

It looks to me like the ignore option deals with filenames, not string IDs

[koke]

I've pushed 257500a which seems to solve the lint issues locally, let's see what Circle has to say

[loremattei]

Oh, I'm sorry I didn't make it clear enough (I thought I did, but re-reading my comment I see it's not): It works with file content as well, but the input string is the whole line. So the regex didn't match because of the ^. This is the reason I hadn't put it in the solution I posted on slack.

Anyway, your solution works as well and to be honest I think it's better because it keeps all the changes in the same file. Since we plan to change the way we handle the translations for these strings in the future, this way we don't risk to leave unused rules in lint.xml when we'll switch.

I'd say 👍

[koke]

I'm a bit confused since this is still marked not ready for review but Lorenzo has given a 👍 already, so approving in case it's waiting on me