feat(kubernetes/resource-usage): k8s resource usage for cluster, node and namespace EE-3 EE-1112 (#5301)

* backported resource usage functionality from EE

* utilising view bound endpoint object instead of depracated EndpointProvider

* refactor flatmap

* addressed merge conflict issues

app/kubernetes/views/cluster/node/node.js

@@ -3,6 +3,7 @@ angular.module('portainer.kubernetes').component('kubernetesNodeView', {
   controller: 'KubernetesNodeController',
   controllerAs: 'ctrl',
   bindings: {
+    endpoint: '<',
     $transition$: '<',
   },
 });