docs: added optional dependency step in getting started guide

Author: vishalnarkhede

docusaurus/docs/reactnative/basics/getting_started.mdx

@@ -16,7 +16,7 @@ This should be considered a primer before delving into the UI and Core Component
 
 Your [environment should be setup](https://reactnative.dev/docs/environment-setup) and a project created prior to beginning the installation.
 
-### Add dependencies
+### Add Required dependencies
 
 Install the required packages in your React Native project.
 
@@ -151,14 +151,22 @@ For some of the packages listed below, there are additional steps required to se
 - `react-native` - [additional installation steps](https://reactnative.dev/docs/image#gif-and-webp-support-on-android)
 - `react-native-image-crop-picker` - [additional installation steps](https://github.com/ivpusic/react-native-image-crop-picker#step-3)
 - `react-native-cameraroll` - [additional installation steps](https://github.com/react-native-cameraroll/react-native-cameraroll#permissions)
-- `react-native-video` - [additional installation steps](https://github.com/react-native-video/react-native-video/blob/master/API.md#installation)
 
 :::note
 
 If you are planning to use file picker functionality, make sure you enable iCloud capability in your app - [Enable iCloud capability](https://camo.githubusercontent.com/ac300ca7e3bbab573a76c151469a89efd8b31e72/68747470733a2f2f33313365353938373731386233343661616638332d66356538323532373066323961383466373838313432333431303338343334322e73736c2e6366312e7261636b63646e2e636f6d2f313431313932303637342d656e61626c652d69636c6f75642d64726976652e706e67)
 
 :::
 
+### Add Optional Dependencies
+
+- `react-native-video` - [additional installation steps](https://github.com/react-native-video/react-native-video/blob/master/API.md#installation)
+
+  > Available in stream-chat-react-native >= v4.7.0
+
+  Installing this package allows you to play the video files/attachments in the chat. Otherwise by default, video files will be opened in default
+  browser of the device.
+
 ### AndroidX Support
 
 > AndroidX is a major step forward in the Android ecosystem, and the old support library artifacts are being deprecated.