Add Vietnamese language support

[anhtamsjc]

Hi,
I’ve completed a full Vietnamese translation for EmulationStation and prepared the emulationstation2.po file (100%). I’d love to contribute this so Vietnamese users on R36S / R36S Clone can use ArkOS more comfortably.
The file is attached here.
Vietnamese-vi_ArkOS.zip
If you need any adjustments or extra translations, I’m happy to help.
Thanks a lot for your work on this project!

[AeolusUX]

Thanks! I'll see if I can add this for the next release :)

[anhtamsjc]

Thanks a lot! Looking forward to the next release. Let me know if you need anything else. :)