Implement in app channel notifications on Dapp

[rohitmalhotra1420]

Problem:

• Right now when the notification is sent for a user subscribed channel there is not intimation or a notification shown to the user.

Solution:

• We need to implement the in-app notification functionality platform wide when the user wallet is connected.
• More details about notification types can be found here: https://push.org/docs/notifications/build/stream-notifications/
• We are already using the notification stream in the AppContext file.
• Designs for this notification needs to be discussed with Zee.
• We will be using the blocks notification component for to implement this feature.