Update README.md

[anjan-keysight]

Data added for minimum resource requirements.

[anjan-keysight]

@bortok @apratimmukherjee I have updated README with minimum resource requirements, kindly review.

[apratimmukherjee]

Overall looks good to me. Few comments provided.

[bortok]

Hi Anjan,

I believe the min requirements values don't belong to the operator repository, and instead should be documented in Ixia-c repo, probably here https://github.com/open-traffic-generator/ixia-c/blob/mkdocs/docs/prerequisites.md. You could reference that documentation from this readme and explain the operator is honoring these numbers.

[anjan-keysight]

@bortok I have updated the ixia-c prerequisites directly, and added link from this README, as you suggested.

[bortok]

@anjan-keysight high chance we will forget to update the link to point to main once mkdocs branch is merged. Could you please track it so that we don't? Otherwise, I'm good.

[anjan-keysight]

I will keep note and update again when mkdocs is merged.