Created top-level page for organization

doc/user/clusters/create/index.md

+---
+stage: Configure
+group: Configure
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
+---
+
+# Create Kubernetes clusters
+
+You can use Infrastructure as Code (IaC) to create clusters on cloud providers.
+You connect the clusters to GitLab by using the agent for Kubernetes.
+
+- [Create a cluster on Google GKE](../../infrastructure/clusters/connect/new_gke_cluster.md)
+- [Create a cluster on Amazon EKS](../../infrastructure/clusters/connect/new_eks_cluster.md)