Improves the productivity || Added icon

[hacker626]

Description

• Added Icon to the website
• Improves the Display format of DDMMYYYY
• Handle the cases for negative and invalid combination of DOB



Fixes: #297

## Type of change - [x] Bug fix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds functionality) - [x] This change requires a documentation update # Checklist: - [x] I have made this from my own - [x] I have taken help from some online resourses - [x] My code follows the style guidelines of this project - [x] I have performed a self-review of my own code - [x] I have made corresponding changes to the documentation - [x] My changes generate no new warnings # ATTACH SCREEN-SHOTS / DEPLOYMENT LINK  



[github-actions[bot]]

@hacker626 Hurray, your PR got merged 🥳. Thanks a bunch. Feel free to take another Issue.💖