v1.7.0 Prerelease 2

This is another prerelease for testing. It includes the following additional changes:

• Set the MaxStaticBitrate to avoid server hard-coded 8 mbps limit.
• Upgrade to MPV version 20211212 0e76372. (Applies to Windows builds only.)
• This version (should) be able to work while Plex Media Player is also running.

Please note as this is a prerelease the macOS build is not notarized.