feat(web,mobile) Allow videos to be looped in the detail viewer (#8615)

* First version of video looping for the web

* Use prop for slideshow state

* refactor asset settings and add autoloop video setting

* rename variables and adjust description

* loop videos based on user settings in gallery viewer

* make asset viewer setting a stateless widget

* do not update video playback value if looping is enabled

* add some translations

* adjust description

* add missing id

* WIP

* chore: clean up

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>
Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

mobile/lib/services/app_settings.service.dart

@@ -46,6 +46,7 @@ enum AppSettingsEnum<T> {
   advancedTroubleshooting<bool>(StoreKey.advancedTroubleshooting, null, false),
   logLevel<int>(StoreKey.logLevel, null, 5), // Level.INFO = 5
   preferRemoteImage<bool>(StoreKey.preferRemoteImage, null, false),
+  loopVideo<bool>(StoreKey.loopVideo, "loopVideo", true),
   mapThemeMode<int>(StoreKey.mapThemeMode, null, 0),
   mapShowFavoriteOnly<bool>(StoreKey.mapShowFavoriteOnly, null, false),
   mapIncludeArchived<bool>(StoreKey.mapIncludeArchived, null, false),