Notifications system

[aadeshkulkarni]

Description:

Build a notification system that does the following:

• Add Notification if post is liked by other user
• Add Notification if post is commented by other user
• Read receipts. When user clicks on notification, redirect to the post and mark notification as read.

Reference:

Use this video for reference.
https://youtu.be/DrCQeI3WqF0?si=LWVXABplhB8tFAu8

[nipunh]

@aadeshkulkarni I can take this.