feat: add sleep util

Author: Ohh-889

primitives/utils/src/async.ts

@@ -0,0 +1,9 @@
+/**
+ * @example
+ * await sleep(1000);
+ * console.log('done');
+ */
+export const sleep = (ms: number) =>
+  new Promise(resolve => {
+    setTimeout(resolve, ms);
+  });