chore: adding cel demo

[JaydipGabani]

What this PR does / why we need it: Adding demo gif for cel

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #

Special notes for your reviewer:

[ritazh]

Thanks for adding this @JaydipGabani
I just noticed we don't have any docs for Integration with k8s Validating Admission Policy. Can you pls add some docs and how to use it with the experimental-enable-k8s-native-validation flag?

For the recorded demo, might be useful to also show the actual code in the constraint template as that is the big difference, otherwise the experience is pretty much the same (as it's intended).

[maxsmythe]

Nice!

LGTM

[JaydipGabani]

I just noticed we don't have any docs for Integration with k8s Validating Admission Policy. Can you pls add some docs and how to use it with the experimental-enable-k8s-native-validation flag?

@ritazh do we want it on website or this README works for now?

[ritazh]

I just noticed we don't have any docs for Integration with k8s Validating Admission Policy. Can you pls add some docs and how to use it with the experimental-enable-k8s-native-validation flag?

@ritazh do we want it on website or this README works for now?

Having it on the website will make it easier for discoverability. We should make sure to state its current status. @maxsmythe in your opinion, is this "pre-alpha" or "alpha".

[maxsmythe]

It's a prototype. We know that the syntax will change.

[ritazh]

It's a prototype. We know that the syntax will change.

Pre-alpha then

[sozercan]

@ritazh are you okay to merge this pr? for other items, we can open seperate issues/prs?

[ritazh]

@ritazh are you okay to merge this pr? for other items, we can open seperate issues/prs?

SGTM I see the demo has been updated. doc PR can be a follow up.

[ritazh]

LGTM