Add NodeMailer integration snippet for sending emails

[KrishChothani]

📝 Description

The repository currently does not include examples of integrating NodeMailer with ServiceNow-related workflows or external utilities. Since email notifications are a common requirement, adding a NodeMailer snippet would be a valuable contribution under the Integration section.

💡 Proposed Snippet

• A Node.js script using NodeMailer to send an email with subject, body, and recipient.
• Example of handling SMTP configuration (e.g., Gmail, Outlook, or custom SMTP server).
• Demonstration of sending user-provided form data (like name, email, and message) as an email.
• Error handling for failed deliveries.

🎯 Why This Is Useful

• Helps developers quickly integrate NodeMailer for external email communication.
• Encourages best practices for handling email in modern integrations.
• Expands repository coverage in the Integration category.

✅ Acceptance Criteria

• Add a NodeMailer snippet in the Integration folder.
• Include setup steps for SMTP (environment variables recommended).
• Code should demonstrate sending both plain text and HTML emails.
• Provide inline comments explaining key steps.

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📌 Category: Integration
📌 Labels: hacktoberfest, good first issue, enhancement

[KrishChothani]

@wiz0floyd i want to work on this .. Please assign me

[wiz0floyd]

Please feel free to contribute any code snippets you think are useful following the directions in CONTRIBUTING.md