Add translatable string prefs.language

src/components/Prefs.vue

@@ -100,7 +100,7 @@ onMounted(() => {
     <option value="nord">{{ t('pref.nord') }}</option>
   </select>
 
-  <h2>Language</h2>
+  <h2>{{ t('pref.language') }}</h2>
 
   <select
     id="pref-lang"

src/locales/de.json

@@ -39,6 +39,7 @@
     "pref": {
         "worst": "am Schlechten",
         "theme": "Farbschema",
+        "language": "Sprache",
         "volume": "Standard-Lautstärke",
         "player": "Audio-Player",
         "quality": "Qualität",

src/locales/en.json

@@ -44,6 +44,7 @@
     "blur_light": "Blur (Light)",
     "dracula": "Dracula",
     "nord": "Nord",
+    "language": "Language",
     "tab": "Default Tab",
     "player": "Audio Player",
     "auto_queue": "Automatically Queue Songs",