It is now possible to play videos from toots within FeedDeck. For that
we are using the "madia_kit" package, which is already used for the
Podcast player on Windows and Linux.
The videos from a toot are saved within the "options.videos" field of an
item next to the "options.media" field. In the "ItemDetailsMastodon"
widget we are then checking if this field is present and contains a list
of video urls. These urls can then be played via the "ItemVideos"
widget.
Instead of using the "just_audio_windows" and "just_audio_mpv" packages
for Windows and Linux, we are now using "just_audio_media_kit", so that
the audio player is working reliable on these platforms.
Note: We have to adjust the Flatpak, to include the dependencies which
are required on Linux.
