Add option to show page number in reader settings

lib/foundation/appdata.dart

@@ -168,6 +168,7 @@ class Settings with ChangeNotifier {
     'followUpdatesFolder': null,
     'initialPage': '0',
     'comicListDisplayMode': 'paging', // paging, continuous
+    'showPageNumberInReader': true,
   };
 
   operator [](String key) {

lib/pages/reader/scaffold.dart

@@ -127,7 +127,8 @@ class _ReaderScaffoldState extends State<_ReaderScaffold> {
         Positioned.fill(
           child: widget.child,
         ),
-        buildPageInfoText(),
+        if (appdata.settings['showPageNumberInReader'] == true)
+          buildPageInfoText(),
         buildStatusInfo(),
         AnimatedPositioned(
           duration: const Duration(milliseconds: 180),

lib/pages/settings/reader.dart

@@ -179,6 +179,13 @@ class _ReaderSettingsState extends State<ReaderSettings> {
           min: 1,
           max: 16,
         ).toSliver(),
+        _SwitchSetting(
+          title: "Show Page Number".tl,
+          settingKey: "showPageNumberInReader",
+          onChanged: () {
+            widget.onChanged?.call("showPageNumberInReader");
+          },
+        ).toSliver(),
       ],
     );
   }