feat: Add German language support

src/i18n/index.ts

@@ -10,6 +10,7 @@ import { ja } from "./lang/ja";
 import { it } from "./lang/it";
 import { es } from "./lang/es";
 import { fa } from "./lang/fa";
+import { de } from "./lang/de";
 import LanguageDetector from 'i18next-browser-languagedetector';
 
 i18n
@@ -30,7 +31,8 @@ i18n
             ja: ja,
             "ja-JP": ja,
             fa: fa,
-            "fa-IR": fa
+            "fa-IR": fa,
+            de: de
         },
         fallbackLng: "en",
         lng: localStorage.getItem("i18nextLng") || "en",