Migrate settings screen to MVVM.

Author: Sharma Elanthiriayan

WooCommerce/Classes/ViewRelated/Dashboard/DashboardViewController.swift

@@ -320,7 +320,7 @@ extension DashboardViewController {
 private extension DashboardViewController {
 
     @objc func settingsTapped() {
-        let settingsViewController = SettingsViewController(nibName: nil, bundle: nil)
+        let settingsViewController = SettingsFactory.settings()
         ServiceLocator.analytics.track(.settingsTapped)
         show(settingsViewController, sender: self)
     }

WooCommerce/Classes/ViewRelated/Dashboard/Settings/Settings/SettingsFactory.swift

@@ -0,0 +1,13 @@
+import UIKit
+
+struct SettingsFactory {
+    /// Creates a Settings view controller
+    ///
+    static func settings() -> UIViewController {
+        let viewModel = SettingsViewModel(stores: ServiceLocator.stores,
+                                          storageManager: ServiceLocator.storageManager)
+        let settingsViewController = SettingsViewController(viewModel: viewModel)
+        viewModel.presenter = settingsViewController
+        return settingsViewController
+    }
+}