Fix crash on windows because msvc does not like forward declarations of deleter classes

openVulkanoCpp/Vulkan/Resources/ManagedBuffer.hpp

@@ -27,6 +27,10 @@ namespace OpenVulkano::Vulkan
 		vk::MemoryPropertyFlags properties;
 		void* mapped = nullptr;
 
+		ManagedBuffer(MemoryAllocation* alloc, vk::DeviceSize offset, vk::DeviceSize size, vk::Buffer buffer, vk::BufferUsageFlags usageFlags, vk::MemoryPropertyFlags  memProperties)
+				: allocation(alloc), offset(offset), size(size), buffer(buffer), usage(usageFlags), properties(memProperties), mapped(nullptr)
+		{}
+
 		~ManagedBuffer()
 		{
 			allocation->device.destroy(buffer);