Added left close button in NFXListController_iOS + NFX.toggle()

[freak4pc]

This PR adds a close button to the top-left of the Search bar on the list controller.

This is needed specifically if using a custom gesture. For example, if you use a 3-finger-swipe on your UIWindow to show Netfox, you will have no way to hide it since that Gesture recognizer only applies to the App’s window.

I’ve also

• Added NFX.toggle() that does a show/hide based on presentation status
• Removed the dependency on the “custom” gesture for show/hide - I don’t think only custom gestures would be interested in showing and hiding the controller.

[kasketis]

@freak4pc thanks again man 🍻 👍 😎