chore: Extract sidebar item injection token into separate package

- Add unit tests to cover custom resources sidebar items

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

open-lens/src/main/index.ts

@@ -25,13 +25,14 @@ runInAction(() => {
   registerLensCore(di, environment);
 
   registerFeature(di,
-      loggerFeature,
+    loggerFeature,
   );
 
-  registerFeature(di,
-      applicationFeature,
-      applicationFeatureForElectronMain,
-      messagingFeatureForMain,
+  registerFeature(
+    di,
+    applicationFeature,
+    applicationFeatureForElectronMain,
+    messagingFeatureForMain,
   );
 
   try {

open-lens/src/renderer/index.ts

@@ -28,6 +28,7 @@ import { reactApplicationFeature } from "@k8slens/react-application";
 import { routingFeature } from "@k8slens/routing";
 import { loggerFeature } from "@k8slens/logger";
 import { animateFeature } from "@k8slens/animate";
+import { clusterSidebarFeature } from "@k8slens/cluster-sidebar";
 
 const environment = "renderer";
 
@@ -54,6 +55,7 @@ runInAction(() => {
     routingFeature,
     metricsFeature,
     animateFeature,
+    clusterSidebarFeature,
   );
 
   autoRegister({