PlayerCtl refactor, add TauonQueueItem class and start using TauonPlaylist too

[C0rn3j]

This started as an attempt to migrate PlayerCtl into a separate file, which was a complete failure and I decided to instead type it completely and refactor things a little - which turns out needed to be a lot of refactoring, as playlists and queues, which I wanted typed, are used everywhere.

• Fully converted t_main to tabs, the entire Python codebase is now using tabs for indentation
• Fix f-strings to restore Python <3.12 support
• Typed up tagscan module
• Specify version import in t_draw too for Gtk - Drop all Gdk/Gtk libs down to 3.0 due to Migrate from libayatana-appindicator/libappindicator-gtk3 to org.kde.StatusNotifierItem #1316
• sg() is now get_track_in_playlist()
• g() is now get_track()
• QUE is now track_queue
• hide_title is now bool instead of 0/1 int
• Added class TauonQueueItem and refactored t_main for it, also started using the earlier-added TauonPlaylist class after a refactor
  • DB bumped to v69 and a migration was added
  • The classes are converted to dicts during pickling/unpickling
  • This means that instead of guessing indexes we can just use the class properties:
    

                    # Skip if hide flag is set
                    if tab[8] is True:
  
                    # vs
  
                    if tab.hidden:

• Pickling now defines the highest available protocol version, it defaults to lowest available (currently 4 vs 5)
• Fixed wrong fallback URL for https://gensokyoradio.net
• Made some exceptions handle better, to not uselessly spam an entire traceback when we already know what's wrong
• Migrated console.print() to logging module in PlayerCtl
• PlayerCtl: Removed unused args
• PlayerCtl: Fix referring to an object of itself (pctl) instead of using a self reference - this is correct, right?
• PlayerCtl: Fix infinite requests timeout
• tryint() fix from earlier broke it completely, fix it for real this time, also moved it to Extra
• Config: Fix not being able to load negative int values and having them reset to default each time
• Phazor: Set libdir to lib64 instead of lib which is 32-bit dir on some distros
• Add devel stubs for Gtk3 and Gdk3, since that's about the only reasonable way we're getting them typed up when developing

TODO:

• Consider if anything in TauonQueueItem or TauonPlaylist should not be changed, so we don't have to write another migration later
• Maybe we should be using slots for this - https://stackoverflow.com/questions/472000/usage-of-slots

[Taiko2k]

In my experience pickeling classes is a bad idea. Better to save the dict myclass.__dict__ then when restoring re instance a new class and use__dict__.update(dict)

[C0rn3j]

Would welcome input on the last remaining TODO items. I suppose the slots are the least important item as we can always easily add them later without a migration(?).

Currently, we have TauonPlaylist, TrackClass and TauonQueueItem.

TrackClass would probably be best to renamed to TauonTrack.

I particularly do not like TauonPlaylist having a playlist_ids (renamed from the previous playlist). Playlist having playlist is confusing.