Kubernetes plugin: UI revamp (#3918)

* initial revamp, no error reporting

* initial error detection

* more error detection

* add microsite page

* minor fixes

* add HPA error detection

* refactor error reporting; add tests

* fix import

* add changeseet

* empty error state

* prettier yaml file

* Update plugins/kubernetes/src/components/KubernetesDrawer/KubernetesDrawer.tsx

Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>

* Update plugins/kubernetes/src/components/KubernetesDrawer/KubernetesDrawer.tsx

Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>

* PR feedback

* revert odd change

* make patch change

* fix test

* Apply suggestions from code review

Co-authored-by: Fredrik Adelöw <freben@gmail.com>

* prettier

* pr feedback

Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Fredrik Adelöw <freben@gmail.com>

.changeset/flat-cycles-lay.md

@@ -0,0 +1,6 @@
+---
+'@backstage/plugin-kubernetes': patch
+'@backstage/plugin-kubernetes-backend': patch
+---
+
+Revamped Kubernetes UI and added error reporting/detection