Improve Node.js version error message

[gaurav-manchandaa]

What does this PR do?

Improves the Node.js version error message shown in the CLI by providing clearer guidance for users when an unsupported Node.js version is detected.

Closes #6

Why?

The previous error message was not very descriptive and could confuse users.
This update makes the message more actionable and helps users quickly resolve the issue.

How to test it
1. Use an unsupported Node.js version.
2. Run the CLI.
3. Verify that the improved error message is displayed.

Screenshots / recordings

N/A (CLI text improvement only)

Checklist
• Tests pass
• Types pass
• Follows project coding standards

[github-actions]

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Here's what happens next:

1. CI will run tests, linting, and type checks automatically
2. A maintainer will review your changes
3. We may suggest some modifications or improvements
4. Once approved, we'll merge it in

Checklist reminder:

• Tests pass (pnpm test)
• Lint passes (pnpm lint)
• Types check (pnpm typecheck)

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