feat: Added styles.yml File in GitHub Issue Templates List

[NarendraKoya999]

Description

• Added styles.yml File for Raising Enhancement Requests from Contributors.
• This File is Added and Created in GitHub Issue Templates Folder.

Fixes #475

Replace issue_no with the issue number which is fixed in this PR

Have you read the Contributing Guidelines on Pull Requests?

• [x] Yes
• [ ] No

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update
• [ ] Documentation Update

Checklist:

• [x] My code follows the style guidelines(Clean Code) of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I've edited the SCRIPTS.md and link to my code.
• [ ] I have created a helpful and easy to understand README.md
• [x] My documentation follows Template for README.md
• [x] My changes generate no new warnings
• [ ] I have added tests/screenshots(if any) that prove my fix is effective or that my feature works.

[NarendraKoya999]

Hi @avinashkranjan . Please Review on this PR and Add Valid Level Label under GSSOC'23. Thank You !