Added VMA_VERSION macro

Requested at https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/issues/507 - thanks @wbyates777

include/vk_mem_alloc.h

diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 77d41a7..32e60a5 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -133,6 +133,8 @@
 #include <vulkan/vulkan.h>
 #endif
 
+#define VMA_VERSION (VK_MAKE_VERSION(3, 4, 0))
+
 #if !defined(VMA_VULKAN_VERSION)
     #if defined(VK_VERSION_1_4)
         #define VMA_VULKAN_VERSION 1004000

src/VulkanSample.cpp

diff --git a/src/VulkanSample.cpp b/src/VulkanSample.cpp
index ef07511..1e36da4 100644
--- a/src/VulkanSample.cpp
+++ b/src/VulkanSample.cpp
@@ -2644,7 +2644,10 @@
 
 static void PrintLogo()
 {
-    wprintf(L"%s\n", APP_TITLE_W);
+    wprintf(L"%s using VMA %d.%d.%d\n", APP_TITLE_W,
+        VK_VERSION_MAJOR(VMA_VERSION),
+        VK_VERSION_MINOR(VMA_VERSION),
+        VK_VERSION_PATCH(VMA_VERSION));
 }
 
 static void PrintHelp()