Create a folder for each language you want under Files\Special:
You can see the two letter codes here:
https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
Create a file named InfoPlist.strings in each of these folders with this content:
"CFBundleDisplayName" = "My App";
"CFBundleName" = "May App";
This is the localized app name.