feat: support app-defined icon sets

crates/core/src/segmented.rs

@@ -7,7 +7,7 @@ use gpui::{
     SpringConfig, StatefulInteractiveElement as _, StyleRefinement, Styled as _, Toggled, Window,
     canvas, div,
 };
-use gpui_native_icons::{IconRole, icon};
+use gpui_native_icons::Icon;
 use gpui_native_theme::{ActiveTheme as _, Size};
 use gpui_native_utils::{focus_handle, focus_ring};
 
@@ -21,7 +21,7 @@ type ChangeHandler<T> = Rc<dyn Fn(T, &mut Window, &mut App)>;
 pub struct SegmentedOption<T> {
     value: T,
     label: SharedString,
-    icon: Option<IconRole>,
+    icon: Option<Icon>,
 }
 
 impl<T> SegmentedOption<T> {
@@ -38,8 +38,11 @@ impl<T> SegmentedOption<T> {
     }
 
     /// Sets a leading icon for the segment.
-    pub fn icon(mut self, role: IconRole) -> Self {
-        self.icon = Some(role);
+    pub fn icon<I>(mut self, icon: I) -> Self
+    where
+        I: Into<Icon>,
+    {
+        self.icon = Some(icon.into());
         self
     }
 }
@@ -226,8 +229,8 @@ where
                         .role(Role::RadioButton)
                         .aria_label(segment.label.clone())
                         .aria_toggled(Toggled::from(is_selected))
-                        .when_some(segment.icon, |segment, role| {
-                            segment.child(icon(role).size(icon_size).color(content_color))
+                        .when_some(segment.icon.clone(), |segment, icon| {
+                            segment.child(icon.size(icon_size).color(content_color))
                         })
                         .child(segment.label.clone())
                         .child(