add changelog

Author: Krystof Woldrich

CHANGELOG.md

@@ -6,6 +6,28 @@
 > make sure you follow our [migration guide](https://docs.sentry.io/platforms/react-native/migration/) first.
 <!-- prettier-ignore-end -->
 
+## Unreleased
+
+### Features
+
+- Introducing `@sentry/react-native/playground` ([#4916](https://github.com/getsentry/sentry-react-native/pull/4916))
+
+  The new `withSentryPlayground` component allows developers to effortlessly verify
+  that the Sentry React Native SDK is properly configured and reports errors as expected.
+
+  ```jsx
+  import * as Sentry from '@sentry/react-native';
+  import { withSentryPlayground } from '@sentry/react-native/playground';
+
+  function App() {
+    return <View>...</View>;
+  }
+
+  export default withSentryPlayground(
+    Sentry.wrap(App)
+  );
+  ```
+
 ## 6.15.1
 
 ### Dependencies