feat: NIC demo files and README

[DylenTurnbull]

Proposed changes

Sending up the K8s manifests as well as the README containing step by step demo instructions, as well as key take away for the demo.

Checklist

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• I have read the contributing guidelines.
• I have signed the F5 Contributor License Agreement (CLA).
• If applicable, I have added tests that prove my fix is effective or that my feature works.
• If applicable, I have checked that any relevant tests pass after adding my changes.
• I have updated any relevant documentation (README.md and/or CHANGELOG.md).

[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
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[DylenTurnbull]

I have hereby read the F5 CLA and agree to its terms