Cleanup 'Cluster' to remove environment specific details (#6951)

- requestNamespaceListPermissions is infallable so no need to have the extra try/catch

- Refactor isMetricHidden method away from Cluster

- Refactor shouldShowResource out of Cluster

- Refactor isInLocalKubeconfig out of Cluster

- Remove depecrated and unused workspace from Cluster

- Refactor out kubectl as a dependency of Cluster

- Remove from cluster getter used only once

- Split out ClusterConnection from Cluster

- Also split out KubeAuthProxyServer from ContextHandler

- Rename ContextHandler to PrometheusHandler

- Cleanup onNetworkOffline/Online impls within ClusterManager

- Remove annotations from ClusterConnection

- Remove mobx annotations from Cluster

- Rename loadConfigFromFileInjectable

- Remove all uses of dead createClusterInjectionToken

- Fix type errors related to broadcastConnectionUpdate

Signed-off-by: Sebastian Malton <sebastian@malton.name>

packages/core/src/renderer/ipc/list-namespaces-forbidden-handler.injectable.tsx

@@ -55,7 +55,7 @@ const listNamespacesForbiddenHandlerInjectable = getInjectable({
             <b>Add Accessible Namespaces</b>
             <p>
               {"Cluster "}
-              <b>{getClusterById(clusterId)?.name ?? "<unknown cluster>"}</b>
+              <b>{getClusterById(clusterId)?.name.get() ?? "<unknown cluster>"}</b>
               {" does not have permissions to list namespaces. Please add the namespaces you have access to."}
             </p>
             <div className="flex gaps row align-left box grow">