Leap pushing button implementation

[takuti]

Ref. #10

TODO:

• Create a scene for this experimental implementation on Unity
• Put a button on the scene
• Understand how the widget works w/ the prepared C# code -> close How to fire events on Unity #10
• Check whether the widget works on the oculus display

@Sushisushi-sandesu/leap-team

[takuti]

Hi @Sushisushi-sandesu/all,

There are good widgets for our AR app created by Leap official: DemoToggleButton Widget.

I have tried this DemoToggleButton widget. Just trying the widgets does not require to write code (because it's demo; scripts are prepared by the official), but the result is actually what we want to see:

[takuti]

In my opinion, we can directly use these widgets to create our AR apps. However, to do so, we need to first understand how the widgets work with the prepared code.

Plz give me your opinion 🙋

[takuti]

Since we have confirmed that the button widget works as we desired at #17, I will close this experimental pull request. Thanks!