SRO Translation

[frzyc]

• continue to use the same GO project in POEditor for SRO, but with sro_ prefix to context
• mimic general shape of GO translation system for SRO
• move main_gen.json, and Translated to libs/common/localization
  • Generate main_gen.json in libs/common/localization, aggregating both gi/ and sr/
  • Allow libs/common/localization/Translated to update translations in gi/localization and sr/localization
• Allow sharable translations between GO and SR