vulkan: modify license.txt

license.txt

@@ -142,6 +142,21 @@ This distribution contains code from the following projects (full license text b
 			Copyright © 2013 Mike Gorchak
 			Copyright © 2014 Timothy Arceri
 
+ - Vulkan Memory Allocator
+	Website: https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator
+	License: MIT/Expat
+	Copyright (c) 2017-2022 Advanced Micro Devices, Inc.
+
+ - volk
+    Website: https://github.com/zeux/volk
+	License: MIT/Expat
+	Copyright (c) 2018-2022 Arseny Kapoulkine
+
+ - Vulkan-Headers
+	Website: https://github.com/KhronosGroup/Vulkan-Headers
+	License: Apache 2.0
+	Copyright (c) 2022 Khronos Group
+
 License text
 ============