(Dashboard) Users recent activity

***Description:***

Add a recent activity section where the auth user can see the recent activities of the other users that he/she follows.

***Criteria***

- Add a real-time recent activity list.
- Create an endpoint if it doesn't exists yet.
- Add a readme guide on the steps/installation of the tools needed for the real-time module.

***References:***
https://zpl.io/a8Nke4g