docs: Guides for popular use-cases (#3346)

Signed-off-by: Kostis Kapelonis <[email protected]>

README.md

@@ -101,3 +101,6 @@ You can reach the Argo Rollouts community and developers via the following chann
 * [How Scalable is Argo-Rollouts: A Cloud Operator’s Perspective](https://www.youtube.com/watch?v=rCEhxJ2NSTI)
 * [Minimize Impact in Kubernetes Using Argo Rollouts](https://medium.com/@arielsimhon/minimize-impact-in-kubernetes-using-argo-rollouts-992fb9519969)
 * [Progressive Application Delivery with GitOps on Red Hat OpenShift](https://www.youtube.com/watch?v=DfeL7cdTx4c)
+* [Progressive delivery for Kubernetes Config Maps using Argo Rollouts](https://codefresh.io/blog/progressive-delivery-for-kubernetes-config-maps-using-argo-rollouts/)
+* [Multi-Service Progressive Delivery with Argo Rollouts](https://codefresh.io/blog/multi-service-progressive-delivery-with-argo-rollouts/)
+* [Progressive Delivery for Stateful Services Using Argo Rollouts](https://codefresh.io/blog/progressive-delivery-for-stateful-services-using-argo-rollouts/)