added node-red pack

[thulasirajkomminar]

Please confirm the following if submitting a new pack:

New Pack Checklist

• The README includes any information necessary to run the application that is not encoded in the pack itself.
• The pack renders properly with nomad-pack render <NAME>
• The pack plans properly with nomad-pack plan <NAME>
• The pack runs properly with nomad-pack runs <NAME>
• If applicable, a screenshot of the running application is attached to the PR.
• The default variable values result in a syntactically valid pack.
• Non-default variables values have been tested. Conditional code paths in the template have been tested, and confirmed to render/plan properly.
• If applicable, the pack includes constraints necessary to run the pack safely (I.E. a linux-only constraint for applications that require linux).