Add username for the user instead of showing their email id.

[trats08]

While performing conversation, email id of user is showing which can be boring. So, we can add a new feature of username where user can decide the name which others can see while chit-chatting. This feature can make conversation more exciting and user experience will be enhanced.

Kindly assign this issue to me and add the Hactoberfest label to it. @akshatbhuhagal