Support videos in media view

[DanielStandfest]

added support for videos (and playback) when swiping in media view.

Closes #1702

@SystemKeeper

[SystemKeeper]

Very cool @DanielStandfest, thanks a lot for working on this 👍
We are going to take a look at this in the upcoming week.

Btw, we can add you to the Nextcloud org if you like? Then you can directly push here. We also have a developer chat where we can create a guest account for you, if you like. Just let me know :)

[DanielStandfest]

Thank you @SystemKeeper.
Sure, would be nice to be added :)

Appreciate it.

[SystemKeeper]

The warning about the branch being out of date is usually not an issue, it's just a warning. If merging would not be possible
you would see a message like:

Since we pull in latest translation changes at least once a day, it's very likely that your branch becomes outdated quite quickly.

If you wanna update the branch to be inline with latest master, you can use the rebase option to prevent unnecessary merge commits btw: