feat(i18n): supports multiple languages (#83)

* feat(i18n): add support for German

* feat(i18n): add support for Spanish

* feat(i18n): add support for Korean

* feat(i18n): add support for French

* feat(i18n): add support for Italiano

* feat(i18n): add support for Portuguese

---------

Co-authored-by: neverforward <neverforward@users.noreply.github.com>

Author: neverforward

frontend/src/assets/locales/de_DE.json

@@ -10,6 +10,12 @@ const localeLoaders = {
   ru_RU: () => import("@/assets/locales/ru_RU.json"),
   ja_JP: () => import("@/assets/locales/ja_JP.json"),
   zh_HK: () => import("@/assets/locales/zh_HK.json"),
+  de_DE: () => import("@/assets/locales/de_DE.json"),
+  es_ES: () => import("@/assets/locales/es_ES.json"),
+  ko_KR: () => import("@/assets/locales/ko_KR.json"),
+  fr_FR: () => import("@/assets/locales/fr_FR.json"),
+  it_IT: () => import("@/assets/locales/it_IT.json"),
+  pt_PT: () => import("@/assets/locales/pt_PT.json"),
 } as const;
 
 type SupportedLocale = keyof typeof localeLoaders;
@@ -30,6 +36,25 @@ const supportedLngs = [
   "zh_HK",
   "zh-HK",
   "zhhk",
+  "ko_KR",
+  "ko-KR",
+  "ko",
+  "fr_FR",
+  "fr-FR",
+  "fr",
+  "de_DE",
+  "de-DE",
+  "de",
+  "es_ES",
+  "es-ES",
+  "es",
+  "pt_PT",
+  "pt-PT",
+  "pt",
+  "it_IT",
+  "it-IT",
+  "it",
+
 ] as const;
 
 const resolveLocale = (language: string): SupportedLocale => {

frontend/src/assets/locales/es_ES.json

@@ -3,5 +3,11 @@
   ["zh_CN", "中文(简体)"],
   ["zh_HK", "中文(香港)"],
   ["ja_JP", "日本語"],
-  ["ru_RU", "Русский язык"]
+  ["ru_RU", "Русский язык"],
+  ["ko_KR", "한국어"],
+  ["fr_FR", "Français"],
+  ["de_DE", "Deutsch"],
+  ["es_ES", "Español"],
+  ["pt_PT", "Português"],
+  ["it_IT", "Italiano"]
 ]