Reorganize AltStore project into UIKit and SwiftUI folders

AltStore/SwiftUI/Views/App Detail/AppScreenshotsScrollView.swift

@@ -0,0 +1,71 @@
+//
+//  AppScreenshotsScrollView.swift
+//  SideStore
+//
+//  Created by Fabian Thies on 27.11.22.
+//  Copyright © 2022 SideStore. All rights reserved.
+//
+
+import SwiftUI
+import AsyncImage
+
+
+/// Horizontal ScrollView with an asynchronously loaded image for each screenshot URL
+///
+/// The struct inherits the `Equatable` protocol and implements the respective comparisation function to prevent the view from being constantly re-rendered when a `@State` change in the parent view occurs.
+/// This way, the `AppScreenshotsScrollView` will only be reloaded when the parameters change.
+struct AppScreenshotsScrollView: View {
+    let urls: [URL]
+    var aspectRatio: CGFloat = 9/16
+    var height: CGFloat = 400
+    
+    @State var selectedScreenshotIndex: Int?
+    
+    var body: some View {
+        ScrollView(.horizontal, showsIndicators: false) {
+            HStack {
+                ForEach(Array(urls.enumerated()), id: \.offset) { i, url in
+                    SwiftUI.Button {
+                        self.selectedScreenshotIndex = i
+                    } label: {
+                        AppScreenshot(url: url)
+                    }
+                }
+            }
+            .padding(.horizontal)
+        }
+        .frame(height: height)
+        .shadow(radius: 12)
+        .sheet(item: self.$selectedScreenshotIndex) { index in
+            NavigationView {
+                AppScreenshotsPreview(urls: urls, aspectRatio: aspectRatio, initialIndex: index)
+            }
+        }
+    }
+}
+
+extension AppScreenshotsScrollView: Equatable {
+    /// Prevent re-rendering of the view if the parameters didn't change
+    static func == (lhs: AppScreenshotsScrollView, rhs: AppScreenshotsScrollView) -> Bool {
+        lhs.urls == rhs.urls && lhs.aspectRatio == rhs.aspectRatio && lhs.height == rhs.height
+    }
+}
+
+extension Int: Identifiable {
+    public var id: Int {
+        self
+    }
+}
+
+
+import AltStoreCore
+
+struct AppScreenshotsScrollView_Previews: PreviewProvider {
+
+    static let context = DatabaseManager.shared.viewContext
+    static let app = StoreApp.makeAltStoreApp(in: context)
+
+    static var previews: some View {
+        AppScreenshotsScrollView(urls: app.screenshotURLs)
+    }
+}