Allow us to close portions of the debugger

[Jarrio]

• I'm using the latest version of react-native-debugger
• I have read README.md

React Native version: [0.40.0]
Platform: [Android]
Is real device of platform: [No]? (Phrasing of this is odd - I'm using an emulator atm)
Operating System: [Windows]

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There are times when I'm doing UI work and there are times when all I want is a console. Please allow us the option to close portions of the debugger. It's not very space efficient to hit the Toggle React-Tools and it turns off but the frame is still there and cannot be shrunk to a smaller size.

As you can see from the above screenshot it kind of takes up unnecessary space when tiling windows in specific ways

[jhen0409]

Yeah, I think it would be great to have a menu item for undock the devtools and hide the debugger window.