Optionally show preview or "reading mode" and "tap zone overlay"

Shows a preview when opening the reader or when the values change

src/modules/reader/constants/ReaderSettings.constants.tsx

@@ -57,6 +57,8 @@ const GLOBAL_READER_SETTING_OBJECT: Record<keyof IReaderSettingsGlobal, undefine
     imagePreLoadAmount: undefined,
     shouldUseAutoWebtoonMode: undefined,
     autoScroll: undefined,
+    shouldShowReadingModePreview: undefined,
+    shouldShowTapZoneLayoutPreview: undefined,
 };
 
 export const GLOBAL_READER_SETTING_KEYS = Object.keys(GLOBAL_READER_SETTING_OBJECT);
@@ -133,6 +135,8 @@ export const DEFAULT_READER_SETTINGS: IReaderSettings = {
         value: 5,
         smooth: true,
     },
+    shouldShowReadingModePreview: true,
+    shouldShowTapZoneLayoutPreview: true,
 };
 
 export const READER_PROGRESS_BAR_POSITION_TO_PLACEMENT: Record<ProgressBarPosition, TooltipProps['placement']> = {