android: Use androidx preferences

src/android/app/build.gradle

@@ -133,6 +133,8 @@ dependencies {
     implementation "androidx.slidingpanelayout:slidingpanelayout:1.2.0"
     implementation "androidx.documentfile:documentfile:1.0.1"
     implementation 'com.google.android.material:material:1.8.0'
+    implementation 'androidx.preference:preference:1.2.0'
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
 
     // For loading huge screenshots from the disk.
     implementation 'com.squareup.picasso:picasso:2.71828'