Add height parameter

[cameronshemilt]

Add a height parameter for stacking multiple glorified items.
A height above 0 will impart a small offset during rotation.

Parameter	Type	Default Value	Description
height	CGFloat	0	Height of the item from its background

Example Usage Scenario:

ZStack {
    Image("badge-background")
        .glorified()
    Image("badge-detail")
        .glorified(height: 50)
}