Plex-mpv-shim

This is a maintenance release to update MPV and also backports some features from jellyfin-mpv-shim.

- Fix compatibility with python-mpv 1.0.1.
- Add mpv_ext_no_ovr to allow using full external mpv config.
- Upgrade MPV version to 20230205 e439ddc (Windows).
- Update to new shader packs with hq and lq versions.
- Add mouse support in menus.

Note: To avoid getting security warnings each time you launch the program, right click and select "Properties". Click "Unblock" towards the bottom of the page, and click "OK".

This fixes SSL issues that some users were having.

Changes:
- Use certifi for urllib.request.urlopen calls 57

This update only applies to Windows.

I have become aware of an issue where HiDPI can cause the video to be blurry. I have solved this by moving to an installer and ensuring the correct manifest is supplied. You'll also get shortcuts with the installer, and it'll install even if you aren't an admin user.

This version fixes media playback on Plex version (1.23.4.4805). (40)

This update only applies to Windows. (Linux release installed via `pip` uses a user-supplied MPV.)

Changes:
- Upgrade to a newer MPV build for security reasons.
- Add more locations to the update checker.

This release adds music support, thanks to a contribution from romosborne (29).