Add mpv.net store version path detection to syncplay

[soredake]

Describe the bug
Syncplay doesn't detect mpv.net from store.

To Reproduce
Steps to reproduce the behavior:

1. Install https://www.microsoft.com/en-us/p/mpvnet/9n64sqztb3lm
2. Run syncplay
3. mpv.net from store is not detected.

Expected behavior
Syncplay detected $env:LOCALAPPDATA\Microsoft\WindowsApps\mpvnet.exe as mpv.net binary

Screenshots
If applicable, add screenshots to help explain your problem.

Version and platform:

• OS: Windows 11 Pro
• Syncplay version and build type: Syncplay 1.6.9

Additional context
Add any other context about the problem here.

[Et0h]

Syncplay was looking for mpv.net in the following locations:

• 'c:\program files\mpv.net\mpvnet.exe'
• 'c:\program Files (x86)\mpv.net\mpvnet.exe'

Thanks to your suggestion I will now add '%LOCALAPPDATA%\Microsoft\WindowsApps\mpvnet.exe' to the list.

[Et0h]

@soredake The mpvnet.exe file in the WindowsApp seems to be some sort of weird dummy file which Python doesn't detect as existing, so I had to hack it to actually look for mpvnet.com instead but then run the .exe version.

When you have time please test it out at and let me know if it works properly for you - you can give either the portable or installer versions of Syncplay a try:

• Portable version: https://github.com/Syncplay/syncplay/suites/4809975579/artifacts/135272074
• Installer version: https://github.com/Syncplay/syncplay/suites/4809975579/artifacts/135272075

[soredake]

@Et0h thanks, it detects it now.