Add ViewModifier and storyRowType to iOS code

[RyshchukDmytro]

Hi guys, I wanted to add ViewModifier for Image and storyRowType function do reduce duplication in code, but found out that your repository is required access.

1. So basically my idea was next:

import SwiftUI

struct ImageModifier: ViewModifier {
    let customFont: Font
    let color: Color

    func body(content: Content) -> some View {
        content
            .font(customFont)
            .foregroundColor(color)
    }
}

extension Image {
    func imageStyle(font: Font = .system(size: 12), color: Color = .primary) -> some View {
        self.modifier(ImageModifier(customFont: font, color: color))
    }
}

So you can use:

 Image(systemName: "arrow.up.right")
  .imageStyle()

 Image(systemName: "arrow.up.right")
  .imageStyle(color: .purple)

 Image(systemName: "arrow.up.right")
  .imageStyle(font: theme.userSansFont(size: 12), color: .green)

instead of

 Image(systemName: "arrow.up.right")
  .font(.system(size: 12))

 Image(systemName: "arrow.up.right")
  .font(.system(size: 12))
  .foregroundStyle(.purple)

 Image(systemName: "arrow.up.right")
  .font(theme.userSansFont(size: 12))
  .foregroundStyle(.green)

2. To add next code to HackerNewsHomeWidgetEntryView

private enum StoryRowSize {
    case small, medium, basic
}

private func storyRowType(_ prefixAmount: Int, size: StoryRowSize) -> some View {
      ForEach(entry.stories.prefix(prefixAmount), id: \.id) { story in
          switch size {
          case .small: smallStoryRow(story)
          case .medium: mediumStoryRow(story)
          case .basic: storyRow(story)
          }
          if story.id != entry.stories.prefix(prefixAmount).last?.id {
              Divider()
          }
      }
  }

It can help you to eliminate duplication:

switch family {
      case .systemSmall:
        storyRowType(2, size: .small)

      case .systemMedium:
        storyRowType(2, size: .medium)

      case .systemLarge, .systemExtraLarge:
        storyRowType(5, size: .basic)

      case .accessoryCircular, .accessoryRectangular, .accessoryInline:
        fatalError("Unsupported family \(family)")

      @unknown default:
        fatalError("Unsupported family \(family)")
}

[trevor-e]

Thanks for the suggestions! Some parts of the UI is still changing as we try to get this on the app store, so we will likely hold off on factoring out shared code for now until the dust settles, but these are good ideas.