[FR] Update System

[LightDestory]

FastHub-Re doesn't rely on Google Services for updating. The update check of the original FastHub is a basic and simple check and Toast notification.

We need to implement a more reliable update system that will notify the user of a new update and help the user to get the latest APK.

By using the already implemented stuff, I think we can use the MessageDialogView to display a YES_NO dialog that will take the user to the release page of the repository.

The main issue is that the CheckVersion class is a service that can't spawn a Fragment.

[Efreak]

If possible, it would be nice to also add fdroid releases, or at least have an fdroid repo here (this should be possible with actions)

[LightDestory]

Generally speaking I think that the current fasthub-re is not production ready yet, the kotlin migration caused few issues that are hard to track down and fix.

I don't have a lot of time to put on this si the project got a slow down, I will try to implement such improvements as soon as we can get a decent fasthub-re version