[AltStore] Adds redesigned MyAppsViewController to refresh/update installed apps

AltStore/My Apps/MyAppsComponents.swift

@@ -0,0 +1,46 @@
+//
+//  MyAppsComponents.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/17/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import UIKit
+
+class InstalledAppCollectionViewCell: UICollectionViewCell
+{
+    @IBOutlet var appIconImageView: UIImageView!
+    @IBOutlet var nameLabel: UILabel!
+    @IBOutlet var developerLabel: UILabel!
+    @IBOutlet var refreshButton: PillButton!
+}
+
+class InstalledAppsCollectionHeaderView: UICollectionReusableView
+{
+    @IBOutlet var textLabel: UILabel!
+    @IBOutlet var button: UIButton!
+}
+
+class UpdatesCollectionHeaderView: UICollectionReusableView
+{
+    let button = PillButton(type: .system)
+    
+    override init(frame: CGRect)
+    {
+        super.init(frame: frame)
+        
+        self.button.translatesAutoresizingMaskIntoConstraints = false
+        self.button.setTitle(">", for: .normal)
+        self.addSubview(self.button)
+        
+        NSLayoutConstraint.activate([self.button.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: -20),
+                                     self.button.topAnchor.constraint(equalTo: self.topAnchor),
+                                     self.button.widthAnchor.constraint(equalToConstant: 50),
+                                     self.button.heightAnchor.constraint(equalToConstant: 26)])
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}