[FR] Open file in full app instead of pop-up, enabling background playback

[HaleyHalcyon]

Is your feature request related to a problem? Please describe. I'm always frustrated when I download a file or choose a file in File Manager, and Gramophone opens it in this inconvenient pop-up screen: Not only does this stop playing when I switch to another app, it actively prevents me from interacting with anything else on the screen, while it’s on like 25% of its area.

Describe the solution you'd like Enable an option to open files using the full player, either replacing the queue or inserting it in front.

Probably there are people who actually like that tiny pop-up, but I am not one of them.

Describe alternatives you've considered I tried VLC Media Player for a while, which did exactly that. However, it did too many things at once and was slow to load the list of files.

Additional context I’m looking for the best music player on F-Droid and IzzyOnDroid.

• [x] I will follow the issue format and will add [FR] to the start of my issue title, and I acknowledge that if I don't follow the format, my issue might get closed without further explanation.