AutoLoad DLC/updates (#12)

* Add hooks to ApplicationLibrary for loading DLC/updates

* Trigger DLC/update load on games refresh

* Initial moving of DLC/updates to UI.Common

* Use new models in ApplicationLibrary

* Make dlc/updates records; use ApplicationLibrary for loading logic

* Fix a bug with DLC window; rework some logic

* Auto-load bundled DLC on startup

* Autoload DLC

* Add setting for autoloading dlc/updates

* Remove dead code; bind to AppLibrary apps directly in mainwindow

* Stub out bulk dlc menu item

* Add localization; stub out bulk load updates

* Set autoload dirs explicitly

* Begin extracting updates to match DLC refactors

* Add title update autoloading

* Reduce size of settings sections

* Better cache lookup for apps

* Dont reload entire library on game version change

* Remove ApplicationAdded event; always enumerate nsp when autoloading

src/Ryujinx.UI.Common/Models/DownloadableContentModel.cs

@@ -0,0 +1,12 @@
+namespace Ryujinx.UI.Common.Models
+{
+    // NOTE: most consuming code relies on this model being value-comparable
+    public record DownloadableContentModel(ulong TitleId, string ContainerPath, string FullPath)
+    {
+        public bool IsBundled { get; } = System.IO.Path.GetExtension(ContainerPath)?.ToLower() == ".xci";
+
+        public string FileName => System.IO.Path.GetFileName(ContainerPath);
+        public string TitleIdStr => TitleId.ToString("x16");
+        public ulong TitleIdBase => TitleId & ~0x1FFFUL;
+    }
+}