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

src/kubeconfigs/azCommands.test.ts

@@ -0,0 +1,14 @@
+import * as actions from "@actions/exec";
+import { runAzCliCommand } from "./azCommands";
+
+describe("Az commands", () => {
+  test("it runs an az cli command", async () => {
+    const path = "path";
+    const args = ["args"];
+
+    jest.spyOn(actions, "exec").mockImplementation(async () => 0);
+
+    expect(await runAzCliCommand(path, args));
+    expect(actions.exec).toBeCalledWith(path, args, {});
+  });
+});