Add custom views and modifiers to the Xcode Library

1:57 - LibraryContentProvider

public protocol LibraryContentProvider {
  @LibraryContentBuilder
  var views: [LibraryItem] { get }

  @LibraryContentBuilder
  public func modifiers(base: ModifierBase) -> [LibraryItem]
}

2:32 - LibraryItem

LibraryItem(
  SmoothieRowView(smoothie: .lemonberry),
  visible: true,
  title: "Smoothie Row View",
  category: .control
)

3:22 - LibraryContent

struct LibraryContent: LibraryContentProvider {
    @LibraryContentBuilder
    var views: [LibraryItem] {
        LibraryItem(
            SmoothieRowView(smoothie: .lemonberry),
            category: .control
        )
        
        LibraryItem(
            SmoothieRowView(smoothie: .lemonberry, showNearbyPopularity: true),
            title: "Smoothie Row View With Popularity",
            category: .control
        )
    }
}

8:57 - Image extension

extension Image {
    func resizedToFill(width: CGFloat, height: CGFloat) -> some View {
        return self
            .resizable()
            .aspectRatio(contentMode: .fill)
            .frame(width: width, height: height)
    }
}

9:17 - Modifiers

@LibraryContentBuilder
    func modifiers(base: Image) -> [LibraryItem] {
        LibraryItem(
            base.resizedToFill(width: 100.0, height: 100.0)
        )
    }