Found a great tool to generate resx files and translate them automatically
https://github.com/salarcode/AutoResxTranslator

After adding a new translation in english, then run this tool with the following configuration:

• Select \systemtraymenu\Resources\Languages\lang.resx as source file
• Select all languages via 'Shift' and 'Arrow down' and press 'Space'
• Make sure the new translation can easily be automatically translated into a specific language such as german
• Make sure new english translation has same value like the key and check 'Translate from key'
• Press 'Translate'
  

Find language code and language name in native here:
https://www.venea.net/web/culture_code

Make sure we keep this new specific translations:
Resources/Languages/lang.tr.resx #403
Resources/Languages/lang.zh-TW.resx #411

Create/Copy a new translation manually here too
Resources/Languages/lang.en.resx -> lang.en-GB.resx #414

Via the tool some resx not matches, rename these files manually (#467)
lang.tl.resx -> lang.fil.resx (Filipino Philippinisch Filipino)
lang.iw.resx -> lang.he.resx (Hebrew Hebräisch עִברִית)
lang.no.resx -> lang.nb.resx (Norwegian Norwegisch norsk)