chore: Improve Chat Performance (#35)

* refactor

* optimistically update message list

* fix

* update

* handle duplicate messages

* update ui

* refactor input

* update multi line input

* clean up

crates/ui/src/list/loading.rs

@@ -0,0 +1,33 @@
+use gpui::{IntoElement, ParentElement as _, RenderOnce, Styled};
+
+use super::ListItem;
+use crate::{skeleton::Skeleton, v_flex};
+
+#[derive(IntoElement)]
+pub struct Loading;
+
+#[derive(IntoElement)]
+struct LoadingItem;
+
+impl RenderOnce for LoadingItem {
+    fn render(self, _window: &mut gpui::Window, _cx: &mut gpui::App) -> impl IntoElement {
+        ListItem::new("skeleton").disabled(true).child(
+            v_flex()
+                .gap_1p5()
+                .overflow_hidden()
+                .child(Skeleton::new().h_5().w_48().max_w_full())
+                .child(Skeleton::new().secondary(true).h_3().w_64().max_w_full()),
+        )
+    }
+}
+
+impl RenderOnce for Loading {
+    fn render(self, _window: &mut gpui::Window, _cx: &mut gpui::App) -> impl IntoElement {
+        v_flex()
+            .py_2p5()
+            .gap_3()
+            .child(LoadingItem)
+            .child(LoadingItem)
+            .child(LoadingItem)
+    }
+}