Added: login/logout logic, session storage

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -6,7 +6,9 @@ import FlutterMacOS
 import Foundation
 
 import package_info_plus
+import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FPPPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FPPPackageInfoPlusPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }