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/entities/store.entity.dart

@@ -182,6 +182,7 @@ enum StoreKey<T> {
   advancedTroubleshooting<bool>(114, type: bool),
   logLevel<int>(115, type: int),
   preferRemoteImage<bool>(116, type: bool),
+  loopVideo<bool>(117, type: bool),
   // map related settings
   mapShowFavoriteOnly<bool>(118, type: bool),
   mapRelativeDate<int>(119, type: int),