Get rid of this.disposers while registering stuff in extensions (#1148)

Signed-off-by: Roman <ixrock@gmail.com>

extensions/node-menu/renderer.tsx

@@ -1,21 +1,15 @@
-import { Registry, LensRendererExtension } from "@k8slens/extensions";
+import { LensRendererExtension } from "@k8slens/extensions";
 import React from "react"
-import { NodeMenu } from "./src/node-menu"
+import { NodeMenu, NodeMenuProps } from "./src/node-menu"
 
 export default class NodeMenuRendererExtension extends LensRendererExtension {
-  async onActivate() {
-    console.log("node-menu extension activated")
-  }
-
-  registerKubeObjectMenus(registry: Registry.KubeObjectMenuRegistry) {
-    this.disposers.push(
-      registry.add({
-        kind: "Node",
-        apiVersions: ["v1"],
-        components: {
-          MenuItem: (props) => <NodeMenu {...props} />
-        }
-      })
-    )
-  }
+  kubeObjectMenuItems = [
+    {
+      kind: "Node",
+      apiVersions: ["v1"],
+      components: {
+        MenuItem: (props: NodeMenuProps) => <NodeMenu {...props} />
+      }
+    }
+  ]
 }

extensions/node-menu/src/node-menu.tsx

@@ -1,7 +1,10 @@
 import React from "react";
 import { Component, K8sApi, Navigation} from "@k8slens/extensions"
 
-export function NodeMenu(props: Component.KubeObjectMenuProps<K8sApi.Node>) {
+export interface NodeMenuProps extends Component.KubeObjectMenuProps<K8sApi.Node> {
+}
+
+export function NodeMenu(props: NodeMenuProps) {
   const { object: node, toolbar } = props;
   if (!node) return null;
   const nodeName = node.getName();