Add translatable string prefs.language

src/components/Prefs.vue

@@ -156,7 +156,7 @@ onMounted(() => {
     <label for="pref-chk-prm">{{ t('pref.prm') }}</label>
   </div>
 
-  <h2>Language</h2>
+  <h2>{{ t('pref.language') }}</h2>
 
   <select
     id="pref-lang"

src/locales/de.json

@@ -43,6 +43,7 @@
     "pref": {
         "worst": "schlechteste",
         "theme": "Farbschema",
+        "language": "Sprache",
         "volume": "Standard-Lautstärke",
         "player": "Audio-Player",
         "quality": "Qualität",

src/locales/en.json

@@ -50,6 +50,7 @@
     "nord": "Nord",
     "compact": "Compact View",
     "prm": "Prefers Reduced Motion",
+    "language": "Language",
     "tab": "Default Tab",
     "player": "Audio Player",
     "auto_queue": "Automatically Queue Songs",