Navigate to pan / landscape zoom (#6481)

* pan if the image is zoomed instead of navigating away
quickly display full landscape image before zooming to fit height in fit to screen

* add Tap to pan preference, defaults to true
add landscape zoom preference, defaults to false

* hide landscape image zoom option if scale is not fit screen

* fix landscape image zoom for first image and loading image

* properly reload pagerholders when landscape zoom option is changed

* enable landscape zoom by default

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsReaderController.kt

@@ -183,6 +183,11 @@ class SettingsReaderController : SettingsController() {
                 entryValues = arrayOf("1", "2", "3", "4", "5", "6")
                 summary = "%s"
             }
+            switchPreference {
+                bindTo(preferences.landscapeZoom())
+                titleRes = R.string.pref_landscape_zoom
+                visibleIf(preferences.imageScaleType()) { it == 1 }
+            }
             intListPreference {
                 bindTo(preferences.zoomStart())
                 titleRes = R.string.pref_zoom_start
@@ -199,6 +204,10 @@ class SettingsReaderController : SettingsController() {
                 bindTo(preferences.cropBorders())
                 titleRes = R.string.pref_crop_borders
             }
+            switchPreference {
+                bindTo(preferences.navigateToPan())
+                titleRes = R.string.pref_navigate_pan
+            }
             switchPreference {
                 bindTo(preferences.dualPageSplitPaged())
                 titleRes = R.string.pref_dual_page_split