- postponed destruction of Vulkan resources

Provided uniform way to handle lifetime of some of Vulkan resources
This helps to avoid issues like descriptor set that outlives its pool

https://forum.zdoom.org/viewtopic.php?t=64341

src/rendering/vulkan/system/vk_framebuffer.cpp

@@ -188,6 +188,7 @@ void VulkanFrameBuffer::DeleteFrameObjects()
 	FrameDeleteList.ImageViews.clear();
 	FrameDeleteList.Buffers.clear();
 	FrameDeleteList.Descriptors.clear();
+	FrameDeleteList.DescriptorPools.clear();
 	FrameDeleteList.CommandBuffers.clear();
 }
 

src/rendering/vulkan/system/vk_framebuffer.h

@@ -59,6 +59,7 @@ public:
 		std::vector<std::unique_ptr<VulkanImageView>> ImageViews;
 		std::vector<std::unique_ptr<VulkanBuffer>> Buffers;
 		std::vector<std::unique_ptr<VulkanDescriptorSet>> Descriptors;
+		std::vector<std::unique_ptr<VulkanDescriptorPool>> DescriptorPools;
 		std::vector<std::unique_ptr<VulkanCommandBuffer>> CommandBuffers;
 	} FrameDeleteList;