Electron build

[DavertMik]

It would be nice if we could optionally run codecept-ui as Electron app.

Pros:

• easy to start and manage this app
• more user friendly

Cons:

• dependency on electron (maybe have it optional)

Inside Electron app there must be two modes:

• full width - in this mode you see steps on the left and screenshots on the right. Useful when reviewing already executed tests or running tests in headless mode
• 1/3 width - in this mode the tests are running inside the browser window, so it is easy to have live preview in a real browser for tests.

So unlike our web app, electron app should also control its size and position (palce itself into top left corner and adjust size to modes)

[gulench]

ui/lib/app.js

Line 29 in d3878a0

x: screenWidth,

@DavertMik, with the above x position, the electron app window falls outside of the desktop-viewport. Shouldn't x be set to either of the following:

• Left-align window: x: 0,
• Right-align window: x: (screenWidth - width),

[DavertMik]

Thank you, @gulench
I will try to implement it this way