Add Node version config

[bhavyaxtech]

Description

Adds a root .nvmrc file to standardize the Node.js version used across contributor environments.

This helps ensure consistency during local development, reduces version-related issues, and improves onboarding for new contributors.

Fixes #618

Type of change

• Bug fix (non-breaking change which fixes an issue)
• 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

How Has This Been Tested?

• Verified that the .nvmrc file is present at the project root.

• Confirmed that the specified Node.js version can be loaded using nvm use.

• Ensured the project remains compatible with the specified Node.js version.

• Local testing

• Vercel Preview Deployment

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have checked that the "DevPath India" branding remains intact

[bhavyaxtech]

Hi @Aditya948351,

I've submitted a PR for this issue. Could you please review it when you have a chance?

Thank you!