feat: Initialize Flutter project with core dependencies, asset structure, and update to embedding v2.

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,12 @@
 import FlutterMacOS
 import Foundation
 
+import flutter_secure_storage_macos
+import shared_preferences_foundation
+import sqflite_darwin
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FlutterSecureStoragePlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStoragePlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
+  SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
 }