feat: add useScrolling docs

docs/useScrolling.md

@@ -0,0 +1,26 @@
+# `useScrolling`
+
+React sensor hook that keeps track of whether the user is scrolling or not.
+
+## Usage
+
+```jsx
+import { useScrolling } from "react-use";
+
+const Demo = () => {
+  const scrollRef = React.useRef(null);
+  const scrolling = useScrolling(scrollRef);
+
+  return (
+    <div ref={scrollRef}>
+      {<div>{scrolling ? "Scrolling" : "Not scrolling"}</div>}
+    </div>
+  );
+};
+```
+
+## Reference
+
+```ts
+useScrolling(ref: RefObject<HTMLElement>);
+```