feat: avatar's background color will be random.

[estd20xx]

Found a bug? Please fill out the sections below. 👍

Issue Summary

When user login, Avatar's background color will be random to different user according to their first letter of first name and last name.

Steps to Reproduce

1. Avatar's background color will be random instead of static color to all users.

Any other relevant information. For example, why do you consider this a bug and what did you expect to happen instead?

1. I have tried to implement the features like Google's Gmail avatar where all users have avatar with different backgrounds.

Actual Results

• What's happening right now that is different from what is expected

Expected Results

• This is an ideal result that the system should get after the tests are performed

Technical details

• Browser version, screen recording, console logs, network requests: You can make a recording with Bird Eats Bug.

• Node.js version
• Anything else that you think could be an issue.

Evidence

• How was this tested? This is quite mandatory in terms of bugs. Providing evidence of your testing with screenshots or/and videos is an amazing way to prove the bug and a troubleshooting chance to find the solution.

I have tested this feature with different name.