* Create media player screen
* Introduce `FileCache` to cache message attachments
* Add file loading functionality into the media provider
* Process tap action on timeline items
* Pass item taps to view model
* Navigate to media player on view model callback
* Commit project file
* Add changelog
* Rename media to video
* Add a loader when large videos being processed
* Add back button explicitly on video screen, fixes for light scheme
* Handle right swipe to dismiss video
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