chore(package): add MIT license and set Node engine requirement

[kranthipoturaju]

Summary

• Make the project license explicit for tooling, scanners, and package managers.
• Avoid inconsistent local environments by documenting the minimum supported Node.js version.

PR Checks

• Code is properly formatted (executed make pre-push command).
• No ESLint warnings (verified with make pre-push command).
• UI Changes are responsive (No UI changes in this PR).
• Performance is maintained (No runtime/UI changes; Lighthouse impact not applicable).
• User experience (UX) considerations are met (No UI/UX changes; improves dev environment guidance).
• Accessibility is supported (No UI changes; accessibility impact not applicable).

Changes

• Added license: "MIT" to package.json.
• Added engines.node: ">=20.18.0" to define the minimum Node.js version for development/tooling guidance.

Files changed

File	Description
package.json	Adds MIT license field and Node.js engine requirement (>=20.18.0) to improve tooling and environment guidance

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[Copilot]

Pull request overview

This PR adds metadata to package.json to explicitly declare the MIT license and specify the minimum Node.js version requirement, improving tooling support and development environment consistency.

Changes:

• Added MIT license field to package.json
• Added Node.js engine requirement (>=20.18.0) to package.json

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