How to enable per pixel scrolling like neovide in ghostty

[rakshith-git]

In neovide terminal emulator you have the ability to get smooth scrolling
and animations wherein you can scroll on a pixel level , i think the only other terminal that does this is sakura terminal . It does seem like ghostty can already do this too as its gpu rendered ,just dont know how to enable it

[JakeWharton]

#3206