[feat] Migrate to GTK4 #7335
Description
Describe the problem
A lot of development has happened in GTK4 - especially in the area of accessibility to run with different controls (e.g. touch screen) and diverse screen sizes (e.g. phones and tablets). It would be great if Tauri would upgrade to GTK4.
Describe the solution you'd like
Upgrade to gtk-rs using GTK4.
Alternatives considered
No response
Additional context
No response