Move all crates to a top-level crates folder

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/gpui/src/util.rs

@@ -0,0 +1,20 @@
+use smol::future::FutureExt;
+use std::{future::Future, time::Duration};
+
+pub fn post_inc(value: &mut usize) -> usize {
+    let prev = *value;
+    *value += 1;
+    prev
+}
+
+pub async fn timeout<F, T>(timeout: Duration, f: F) -> Result<T, ()>
+where
+    F: Future<Output = T>,
+{
+    let timer = async {
+        smol::Timer::after(timeout).await;
+        Err(())
+    };
+    let future = async move { Ok(f.await) };
+    timer.race(future).await
+}