Refactor entire project (#39)

- Use more modern TypeScript conventions
- Use JavaScript Kubernetes Client
- Add unit tests
- Add integration tests
- Add TypeScript compile verify workflow
- Switch codeowners

tests/sample-kubeconfig.yml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Config
+clusters:
+  - cluster:
+      server: http://example.com:8080
+    name: example
+contexts:
+  - context:
+      cluster: example
+      namespace: example
+      user: example
+    name: example