Adds unit tests for vcore quickstart feature code (#1618)

* Safety checkin

* Adding vcoremongo to Main

* Safety checkin

* Adding vcoremongo to Main

* Safety commit

* Safety checkin

* Adding vcoremongo to Main

* Safety commit

* Integrating mongo shell

* Safety checkin

* Adding vcoremongo to Main

* Safety commit

* Integrating mongo shell

* Safety checkin

* Safety commit

* Enable mongo shell in its own tab

* Safety checkin

* Adding vcoremongo to Main

* Safety commit

* Integrating mongo shell

* Safety checkin

* Safety commit

* Safety commit

* Integrating mongo shell

* Safety checkin

* Safety commit

* Enable mongo shell in its own tab

* Adding message

* Integrated mongo shell

* Moving Juno endpoint back to prod

* Fixed command bar unit tests

* Fixing spelling

* Adds unit tests for vcore quickstart feature code

* Fix lint

src/Utils/JestUtils.ts

@@ -0,0 +1,4 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export function mockFunction<T extends (...args: any[]) => any>(fn: T): jest.MockedFunction<T> {
+  return fn as jest.MockedFunction<T>;
+}