✨(react) add Input component

Finally the first form component of the design system. It wraps and enhance
the native input element.

packages/react/src/utils/index.ts

@@ -3,3 +3,12 @@ export const noop = () => undefined;
 export function sleep(ms: number): Promise<void> {
   return new Promise((resolve) => setTimeout(resolve, ms));
 }
+
+export function randomString(length: number = 8): string {
+  const chars =
+    "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  let result = "";
+  for (let i = length; i > 0; --i)
+    result += chars[Math.floor(Math.random() * chars.length)];
+  return result;
+}