Adds basic AppsViewController implementation

AltStore/Components/AppIconImageView.swift

@@ -0,0 +1,38 @@
+//
+//  AppIconImageView.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class AppIconImageView: UIImageView
+{
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.contentMode = .scaleAspectFill
+        self.clipsToBounds = true
+        
+        self.layer.borderWidth = 0.5
+        self.layer.borderColor = UIColor.lightGray.cgColor
+        
+        // Allows us to match system look for app icons.
+        if self.layer.responds(to: Selector(("continuousCorners")))
+        {
+            self.layer.setValue(true, forKey: "continuousCorners")
+        }
+    }
+    
+    override func layoutSubviews()
+    {
+        super.layoutSubviews()
+        
+        // Based off of 60pt icon having 12pt radius.
+        let radius = self.bounds.height / 5
+        self.layer.cornerRadius = radius
+    }
+}

AltStore/Components/Button.swift

@@ -0,0 +1,51 @@
+//
+//  Button.swift
+//  AltStore
+//
+//  Created by Riley Testut on 5/9/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class Button: UIButton
+{
+    override var intrinsicContentSize: CGSize {
+        var size = super.intrinsicContentSize
+        size.width += 20
+        return size
+    }
+    
+    override func awakeFromNib()
+    {
+        super.awakeFromNib()
+        
+        self.setTitleColor(.white, for: .normal)
+        
+        self.layer.masksToBounds = true
+        self.layer.cornerRadius = 8
+        
+        self.update()
+    }
+    
+    override func tintColorDidChange()
+    {
+        super.tintColorDidChange()
+        
+        self.update()
+    }
+    
+    override var isHighlighted: Bool {
+        didSet {
+            self.update()
+        }
+    }
+}
+
+private extension Button
+{
+    func update()
+    {
+        self.backgroundColor = self.tintColor
+    }
+}