Add Vietnamese to Archinstall (#4582)

* add vn lang, trans lang, translating ~28%

* done 80/735 (10% not ~28% sorry) and 735/735 done (counted fuzzy or google translate helper). See https://gist.github.com/BlackCatOfficialytb/e85bad1758d9e29c349f2d75b91363f1 for program to help me translate

* doing plenty of things

* up to 40% by removing fuzzy tag in correct translate words/paragraph

* fix the extension

* more words/paragraphs are unfuzzied

* trans up to 57%

* translate up to 61%

archinstall/locales/languages.json

@@ -173,7 +173,7 @@
  {"abbr": "ur", "lang": "Urdu", "translated_lang": "اردو"},
  {"abbr": "uz", "lang": "Uzbek", "translated_lang": "O'zbek"},
  {"abbr": "ve", "lang": "Venda"},
- {"abbr": "vi", "lang": "Vietnamese"},
+ {"abbr": "vi", "lang": "Vietnamese", "translated_lang": "Tiếng Việt"},
  {"abbr": "vo", "lang": "Volapük"},
  {"abbr": "wa", "lang": "Walloon"},
  {"abbr": "wo", "lang": "Wolof"},