feat.在线安装器，更好的Issue与pull request模板。

LanDesktopPLONDS.installer/App.axaml.cs

@@ -0,0 +1,33 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+using LanDesktopPLONDS.Installer.Services;
+using LanDesktopPLONDS.Installer.ViewModels;
+using LanDesktopPLONDS.Installer.Views;
+using LanMountainDesktop.Shared.Contracts.Privacy;
+
+namespace LanDesktopPLONDS.Installer;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            var privacyIdentity = new PrivacyDeviceIdentityProvider();
+            var installService = OnlineInstallService.CreateDefault(privacyIdentity);
+            var consentStore = new InstallerPrivacyConsentStore();
+            desktop.MainWindow = new MainWindow
+            {
+                DataContext = new MainWindowViewModel(installService, privacyIdentity, consentStore)
+            };
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}