Add docs to install Edge via ArgoCD

[davidjumani]

Version

main (1.16.x beta)

Describe the requested changes

There's already a blog on From Zero to Gloo Edge in 15 Minutes: ArgoCD GitOps Edition As of now, this is just a blog, but there are customers who install Edge via Argo. Having this in the docs will be a good reference, and grow to include best practices specific to this topic.

Link to any relevant existing docs

https://www.solo.io/blog/from-zero-to-gloo-edge-in-15-minutes-gitops-edition/

Browser Information

No response

Additional Context

No response

[davidjumani]

Worth mentioning https://github.com/solo-io/gloo/pull/8738/files#r1341595379 as well

[Nadine2016]

there is another blog about this https://github.com/ably77/gloo-edge-argo-rollouts-blog

[davidjumani]

Thanks @Nadine2016, that blog is on argo rollouts to trigger changes. The docs that need to ba added here should detail how to install edge via argo

[Nadine2016]

this was presented in the enablement session https://drive.google.com/drive/folders/1hq0_AQq7DnJNh1PgMVDo1jwYQijmcf2V .

[Nadine2016]

We should also show an example for how to use the Argo Rollouts plugin