Add Vulkan-Headers repo as submodule

Exanite · Exanite · commit dd1d1ef5da25 · 2025-05-26T08:31:47.000-04:00
diff --git a/.gitmodules b/.gitmodules
@@ -16,3 +16,6 @@
 [submodule "eng/submodules/vulkan"]
 	path = eng/submodules/vulkan
 	url = https://github.com/KhronosGroup/Vulkan-Docs.git
+[submodule "eng/submodules/vulkan-headers"]
+	path = eng/submodules/vulkan-headers
+	url = https://github.com/KhronosGroup/Vulkan-Headers.git
diff --git a/eng/submodules/vulkan-headers b/eng/submodules/vulkan-headers
@@ -0,0 +1 @@
+Subproject commit 75ad707a587e1469fb53a901b9b68fe9f6fbc11f
