chore: optimize resource usage (#162)

* avoid string allocation

* cache image

* .

* .

* .

* fix

crates/ui/src/root.rs

@@ -194,7 +194,7 @@ impl Root {
         }
     }
 
-    // Render Notification layer.
+    /// Render Notification layer.
     pub fn render_notification_layer(
         window: &mut Window,
         cx: &mut App,

crates/ui/src/text.rs

@@ -1,7 +1,7 @@
 use std::ops::Range;
 use std::sync::Arc;
 
-use common::display::ReadableProfile;
+use common::display::RenderedProfile;
 use gpui::{
     AnyElement, AnyView, App, ElementId, HighlightStyle, InteractiveText, IntoElement,
     SharedString, StyledText, UnderlineStyle, Window,