This is a convenience type for encapsulating asynchronous logic in a SwiftUI Button. The initial base of this code was taken from John Sundell's article here: https://swiftbysundell.com/articles/building-an-async-swiftui-button/. This included the main idea and structure of AsyncButton. I restuctured it in various ways (i.e. using OptionSet for ActionOptions, backporting to iOS 13, using the .task modifier instead of a nested Task, the extra convenience initializers, etc.).
- Create environment values (internal ones that are used by public modifiers) for more granular settings
- Animation for changes to
isEnabledandisShowingPlaceholder - Duration to wait before showing the placeholder view, which is used just in case
actionis so fast, nothing is needed to be shown - ActionOptions
- Animation for changes to