Avalonia - Couple fixes and improvements to vulkan (#3483)

* drop split devices, rebase

* add fallback to opengl if vulkan is not available

* addressed review

* ensure present image references are incremented and decremented when necessary

* allow changing vsync for vulkan

* fix screenshot on avalonia vulkan

* save favorite when toggled

* improve sync between popups

* use separate devices for each new window

* fix crash when closing window

* addressed review

* don't create the main window with immediate mode

* change skia vk delegate to method

* update vulkan throwonerror

* addressed review

Ryujinx.Ava/Ui/Backend/Vulkan/VulkanOptions.cs

@@ -11,11 +11,6 @@ namespace Ryujinx.Ava.Ui.Vulkan
         /// </summary>
         public string ApplicationName { get; set; }
 
-        /// <summary>
-        /// Specifies the Vulkan API version to use
-        /// </summary>
-        public Version VulkanVersion { get; set; } = new Version(1, 1, 0);
-
         /// <summary>
         /// Specifies additional extensions to enable if available on the instance
         /// </summary>