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/components/resource-reservation/resourceReservation.js

@@ -3,9 +3,12 @@ angular.module('portainer.kubernetes').component('kubernetesResourceReservation'
   controller: 'KubernetesResourceReservationController',
   bindings: {
     description: '@',
-    cpu: '<',
+    cpuReservation: '<',
+    cpuUsage: '<',
     cpuLimit: '<',
-    memory: '<',
+    memoryReservation: '<',
+    memoryUsage: '<',
     memoryLimit: '<',
+    displayUsage: '<',
   },
 });