Encourage more projects to use Artifact Hub

[nate-double-u]

See if we can get more projects using https://artifacthub.io/ and embedding it on their websites like https://keptn.sh/docs/integrations/

[nate-double-u]

Looks like Keptn's new site hasn't kept the integrations, but we can still look into how best to leverage artifacthub with other projects.

[thisisobate]

This list tracks cncf projects with more than 1 package hosted on ArtifactHub.

Org (ArtifactHub link)	upstream issue/comment	Note
Argo	argoproj/argo-site#143
Prometheus	prometheus/docs#2460
Kyverno	kyverno/website#1238
Istio	istio/istio.io#15014
Cilium	cilium/cilium.io#498
cert-manager	cert-manager/website#1473
kubewarden	kubewarden/docs#401
Meshery	meshery/meshery#10848
Rook	rook/rook.github.io#157
Inspektor gadget	inspektor-gadget/website#42
Keptn	keptn/lifecycle-toolkit#3491
Jaeger	jaegertracing/documentation#697