Look into Ventura API improvements

[NattyNarwhal]

Mostly relating to anything involving AVPlayer and AppKit. I don't want to sacrifice my prod Mac for Ventura so uh...

• Share popover in menu (see #25)
• Use the new form insets, maybe with SwiftUI (see #13)
• Variable SF Symbols (use current code on Big Sur/Monterey)

Interesting talks:

• https://developer.apple.com/videos/play/wwdc2022/10074/
• https://developer.apple.com/videos/play/wwdc2022/10075/

[NattyNarwhal]

There's an AVPlayerItem nowPlayingInfo, but it's not clear why this is. Better than using the NPIC?