feat: theme integration

refactor: only apply updates if there is a change in the theme

refactor: include theme in state

cleanup: theme integration

src/shell/element/stack_hover.rs

@@ -18,8 +18,9 @@ pub type StackHover = IcedElement<StackHoverInternal>;
 pub fn stack_hover(
     evlh: LoopHandle<'static, crate::state::State>,
     size: Size<i32, Logical>,
+    theme: cosmic::Theme,
 ) -> StackHover {
-    StackHover::new(StackHoverInternal, size, evlh)
+    StackHover::new(StackHoverInternal, size, evlh, theme)
 }
 
 pub struct StackHoverInternal;