feat(locale): add new locale km-KH (Khmer: National language of Cambodia)

Author: nidexingg

config/i18n.ts

@@ -213,6 +213,11 @@ const locales: (LocaleObjectData | (Omit<LocaleObjectData, 'code'> & { code: str
     file: 'ja-JP.json',
     name: '日本語',
   },
+  {
+    code: 'km-KH',
+    file: 'km-KH.json',
+    name: 'ខេមរភាសា',
+  },
   {
     code: 'ne-NP',
     file: 'ne-NP.json',