[ADD] News, Browse and Settings views ported to SwiftUI

This commit contains WIP SwiftUI versions of most of the views in SideStore.

AltStore/View Components/AppPillButton.swift

@@ -0,0 +1,99 @@
+//
+//  AppPillButton.swift
+//  SideStore
+//
+//  Created by Fabian Thies on 20.11.22.
+//  Copyright © 2022 Fabian Thies. All rights reserved.
+//
+
+import SwiftUI
+import AltStoreCore
+
+struct AppPillButton: View {
+    
+    @ObservedObject
+    var appManager = AppManager.shared.publisher
+    
+    let app: AppProtocol
+    var showRemainingDays = false
+    
+    var storeApp: StoreApp? {
+        (app as? StoreApp) ?? (app as? InstalledApp)?.storeApp
+    }
+    
+    var installedApp: InstalledApp? {
+        (app as? InstalledApp) ?? (app as? StoreApp)?.installedApp
+    }
+    
+    var progress: Progress? {
+        appManager.refreshProgress[app.bundleIdentifier] ?? appManager.installationProgress[app.bundleIdentifier]
+    }
+//    let progress = {
+//        let progress = Progress(totalUnitCount: 100)
+//        progress.completedUnitCount = 20
+//        return progress
+//    }()
+    
+    var buttonText: String {
+//        guard progress == nil else {
+//            return ""
+//        }
+        
+        if let installedApp {
+            if self.showRemainingDays {
+                return DateFormatterHelper.string(forExpirationDate: installedApp.expirationDate)
+            }
+            
+            return "Open"
+        }
+        
+        return "Free"
+    }
+    
+    var body: some View {
+        SwiftUI.Button(action: handleButton, label: {
+            Text(buttonText.uppercased())
+                .bold()
+        })
+        .buttonStyle(PillButtonStyle(tintColor: storeApp?.tintColor ?? .black, progress: progress))
+    }
+    
+    func handleButton() {
+        if let installedApp {
+            self.openApp(installedApp)
+        } else if let storeApp {
+            self.installApp(storeApp)
+        }
+    }
+    
+    func openApp(_ installedApp: InstalledApp) {
+        UIApplication.shared.open(installedApp.openAppURL)
+    }
+    
+    func installApp(_ storeApp: StoreApp) {
+        let previousProgress = AppManager.shared.installationProgress(for: storeApp)
+        guard previousProgress == nil else {
+            previousProgress?.cancel()
+            return
+        }
+        
+        let _ = AppManager.shared.install(storeApp, presentingViewController: UIApplication.shared.keyWindow?.rootViewController) { result in
+            
+            switch result {
+            case let .success(installedApp):
+                print("Installed app: \(installedApp.bundleIdentifier)")
+                
+            case let .failure(error):
+                print("Failed to install app: \(error.localizedDescription)")
+                NotificationManager.shared.reportError(error: error)
+                AppManager.shared.installationProgress(for: storeApp)?.cancel()
+            }
+        }
+    }
+}
+
+//struct AppPillButton_Previews: PreviewProvider {
+//    static var previews: some View {
+//        AppPillButton()
+//    }
+//}