[AltStore] Adds redesigned BrowseViewController to browse and install apps

AltStore/Browse/ScreenshotCollectionViewCell.swift

@@ -0,0 +1,28 @@
+//
+//  ScreenshotCollectionViewCell.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/15/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+import Roxas
+
+@objc(ScreenshotCollectionViewCell)
+class ScreenshotCollectionViewCell: UICollectionViewCell
+{
+    let imageView: UIImageView
+    
+    required init?(coder aDecoder: NSCoder)
+    {
+        self.imageView = UIImageView(image: nil)
+        self.imageView.layer.cornerRadius = 8
+        self.imageView.layer.masksToBounds = true
+        
+        super.init(coder: aDecoder)
+        
+        self.addSubview(self.imageView, pinningEdgesWith: .zero)
+    }
+}