chore: added validations for nick name field

[sakksham7]

Type of Change

• [ ] Bugfix
• [ ] New feature
• [X] Enhancement
• [ ] Refactoring
• [ ] Dependency updates
• [ ] Documentation
• [ ] CI/CD

Description

Added validations :-

• Nickname should not exceed 12 characters and should not have more than 2 digits

How did you test it?

tested via passing invalid nick name test cases

Checklist

• [X] I ran npm run re:build
• [X] I reviewed submitted code
• [ ] I added unit tests for my changes where possible

[semanticdiff-com[bot]]

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