feat: Add blueprint for using rayserve with vLLM on Inferentia2

[ratnopam]

What does this PR do?

Adds capability to deploy LLMs for inference on AWS Inferentia with ray and vLLM 🛑 Please open an issue first to discuss any significant work and flesh out details/direction - we would hate for your time to be wasted. Consult the CONTRIBUTING guide for submitting pull-requests.

Motivation

#591

More

• [] Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• [] Mandatory for new blueprints. Yes, I have added a example to support my blueprint PR
• [ ] Mandatory for new blueprints. Yes, I have updated the website/docs or website/blog section for this feature
• [ ] Yes, I ran pre-commit run -a with this PR. Link for installing pre-commit locally

For Moderators

• [ ] E2E Test successfully complete before merge?

Additional Notes