chore(l10n): update German translations

Currently translated at 100.0% (55 of 55 strings)

Translation: Fossify/Keyboard
Translate-URL: https://hosted.weblate.org/projects/fossify/keyboard/de/
Via: Weblate

Author: Kachelkaiser

app/src/main/res/values-de/strings.xml

@@ -52,4 +52,7 @@
     <string name="sound_none">Aus</string>
     <string name="sound_always">Immer an</string>
     <string name="sound_system">System folgen</string>
+    <string name="layout_and_appearance">Layout &amp; Erscheinungsbild</string>
+    <string name="keypress">Tastendruck</string>
+    <string name="typing_and_input">Tippen &amp; Eingabe</string>
 </resources>