Merge pull request #1160 from GetStream/vishal/push-v2

docs: push notifications v2

Author: vishalnarkhede

docusaurus/docs/reactnative/assets/guides/push-notifications-v2/chat_overview_page.png

@@ -1,4 +1,4 @@
 {
   "label": "Basics",
-  "position": 1
-}
+  "position": 0
+}

docusaurus/docs/reactnative/assets/guides/push-notifications-v2/firebase_notifications_toggle.png

@@ -1,4 +1,4 @@
 {
   "label": "Customization",
-  "position": 2
-}
+  "position": 1
+}

docusaurus/docs/reactnative/basics/_category_.json

@@ -1,4 +1,4 @@
 {
   "label": "Guides",
-  "position": 6
-}
+  "position": 2
+}

docusaurus/docs/reactnative/customization/_category_.json

@@ -1,6 +1,6 @@
 ---
 id: message-customization
-sidebar_position: 2
+sidebar_position: 3
 title: Customize Message UI
 ---
 

docusaurus/docs/reactnative/guides/_category_.json

@@ -1,14 +1,16 @@
 ---
-id: push-notifications
+id: push-notifications-v1
 sidebar_position: 1
-title: Push Notifications
+title: Push Notifications (V1 legacy)
 ---
 
 Easiest way to integrate push notifications in your Chat applications is using Firebase. [React Native Firebase](https://rnfirebase.io/) is the officially recommended collection of packages that brings React Native support for all Firebase services on both Android and iOS apps.
 
-## Requirements
+:::caution
+Version 1 (legacy) of push notifications won't be removed immediately but there won't be any new features. That's why new applications are highly recommended to use version 2 from the beginning to leverage upcoming new features.
+:::
 
-<!-- TODO: Change to new docs for links -->
+## Requirements
 
 - Only [members](https://getstream.io/chat/docs/javascript/channel_members/?language=javascript&q=addMember) of channel receive Push Notifications
 - We only send push notifications, when the user doesn't have any active websocket connection (which is established when you call `client.connectUser`).