Added kubectl and helm to dec container

Author: dminkovski

.devcontainer/devcontainer.json

@@ -16,7 +16,10 @@
         "ghcr.io/devcontainers/features/git:1": {
             "version": "2.39.1"
         },
-        "ghcr.io/devcontainers-contrib/features/typescript:2": {}
+        "ghcr.io/devcontainers-contrib/features/typescript:2": {},
+        "ghcr.io/devcontainers/features/kubectl-helm-minikube:1": {
+            "version": "1.1.8"
+        }
     },
     "customizations": {
         "vscode": {