Ava UI: Mod Manager (#4390)

* Let’s start again

* Read folders and such

* Remove Open Mod Folder menu items

* Fix folder opening, Selecting/deselecting

* She works

* Fix GTK

* AddMod

* Delete

* Fix duplicate entries

* Fix file check

* Avalonia 11

* Style fixes

* Final style fixes

* Might be too general

* Remove unnecessary using

* Enable new mods by default

* More cleanup

* Fix saving metadata

* Dont deseralise ModMetadata several times

* Avalonia I hate you

* Confirmation dialgoues

* Allow selecting multiple folders

* Add back secondary folder

* Search both paths

* Fix formatting

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Rename Title to Application

* Generic locale key

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Locale Updates

* GDK Feedback

* Fix

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>

src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs

@@ -192,7 +192,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                 }
                 catch (Exception ex)
                 {
-                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadNcaErrorMessage, ex.Message, path)));
+                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadFileErrorMessage, ex.Message, path)));
                 }
             }
         }