v2.5.0 - Improved MPV customization support

This version improves ergonomics of custom MPV configurations by allowing for a full-fledged MPV configuration directory. This makes it easy to add scripts and fonts by simply placing them in the respective directories and may also make other kinds of configurations easier. Some issues with the application not closing correctly have also been resolved.

Jellyfin MPV Shim running with mpv-osc-modern. Most OSCs supporting the thumbfast script will now work in MPV Shim unmodified. Just set thumbnail_osc_builtin to false in conf.json and install the OSC of your choice in the scripts folder.

Changes:

• Fix thread hang when quitting application. (#317)
• Fix direct paths in external mpv. (#316)
• Ignore chapters which do not have images for trickplay.
• Fix script support and map config folder to MPV (including scripts/fonts). (#320) (#321)
• Add thumbfast compatibility layer to support alternate OSCs. (#321)