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/input/blink_cursor.rs

@@ -1,6 +1,7 @@
-use gpui::{Context, Timer};
 use std::time::Duration;
 
+use gpui::{Context, Timer};
+
 static INTERVAL: Duration = Duration::from_millis(500);
 static PAUSE_DELAY: Duration = Duration::from_millis(300);