Layout Changes (#25)

Co-authored-by: fgerber <frederic.gerber@mydoli.ch>
Co-authored-by: soraefir <soraefir+git@pm.me>
Reviewed-on: helcel/beendroid#25
Co-authored-by: fgerber <fred@mydoli.ch>
Co-committed-by: fgerber <fred@mydoli.ch>

app/src/main/res/values/arrays.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string-array name="entries_theme" >
+        <item>@string/system</item>
+        <item>@string/light</item>
+        <item>@string/dark</item>
+    </string-array>
+</resources>