Nepali Translation (divyaswormakai's reviewed & some changes) (#7033)

* feat: prepare necesaary files

* fix: message file for nepali translation

* feat: language file update

* feat: add missing pieces

* feat: one and other updates

* additional changes

---------

Co-authored-by: Divyaswor Makai <makaidivya@gmail.com>

src/locale/__tests__/helpers.test.ts

@@ -12,4 +12,5 @@ test('sanitizeAppLanguageSetting', () => {
   expect(sanitizeAppLanguageSetting('en,foo')).toBe(AppLanguage.en)
   expect(sanitizeAppLanguageSetting('foo,en')).toBe(AppLanguage.en)
   expect(sanitizeAppLanguageSetting('vi')).toBe(AppLanguage.vi)
+  expect(sanitizeAppLanguageSetting('np')).toBe(AppLanguage.np)
 })