Add support for window.show()

[curtisblackwell]

This PR adds support for showing windows (I'll open the necessary PR in the NativePHP/laravel repo soon). I tried adding tests to match the dialog and clipboard tests, but I couldn't figure out why I was getting an error when I tried asserting a method was called.

Here's the error in case you have suggestions you'd like me to try:

FAIL  electron-plugin/tests/endpoints/window.test.ts
  ● Test suite failed to run

    electron-plugin/tests/endpoints/window.test.ts:36:21 - error TS2339: Property 'window' does not exist on type 'typeof CrossProcessExports'.

    36     expect(electron.window.show).toHaveBeenCalled();

[simonhamp]

I think the error you're seeing is because window isn't a child of electron - I think you'll need to mock the BrowserWindow API.

But bear in mind I don't know much about how Jest works 😅

[curtisblackwell]

Turns out it was just the state that needed to be mocked for these specific tests and they're now passing.

I spent a long time trying to figure out how to mock electron.BrowserWindow correctly as well, but no dice. That'll be necessary to more thoroughly test window.ts, but I'm not great with JavaScript mocking and don't really have the patience to figure it out on my own.

[simonhamp]

Nice. This is fine