Introducing PinnipedHelper class to enable authentication to kubernetes clusters throught Pinniped and PinnipedTMC

Signed-off-by: Andres Mauricio Gomez P <andmagom@outlook.com>

plugins/kubernetes-node/package.json

@@ -22,7 +22,13 @@
     "postpack": "backstage-cli package postpack"
   },
   "devDependencies": {
-    "@backstage/cli": "workspace:^"
+    "@backstage/backend-app-api": "workspace:^",
+    "@backstage/backend-common": "workspace:^",
+    "@backstage/backend-test-utils": "workspace:^",
+    "@backstage/cli": "workspace:^",
+    "@backstage/plugin-kubernetes-backend": "workspace:^",
+    "msw": "^1.3.1",
+    "supertest": "^6.1.3"
   },
   "files": [
     "dist"
@@ -31,6 +37,9 @@
     "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/catalog-model": "workspace:^",
     "@backstage/plugin-kubernetes-common": "workspace:^",
-    "@backstage/types": "workspace:^"
+    "@backstage/types": "workspace:^",
+    "@kubernetes/client-node": "^0.20.0",
+    "node-fetch": "^2.6.7",
+    "winston": "^3.2.1"
   }
 }