Add support for using SwiftUI views as images in the dynamic notch

[zenangst]

This PR adds support for using custom views as icons in the dynamic notch info. It tries to keep the current API intact by adding functions and initializers that act as overloads.

init(…) where IconView: Image 
func doSomething() where IconView: Image

This works for me locally but it might still some more tweaks, please try it out and verify that something didn't break outside of my environment ❤️

Screengrab

https://github.com/user-attachments/assets/dad0b8d0-89d3-46aa-83d6-c1ae1b838928