Added SPIRV-Headers submodule

Przemog1 · Przemog1 · commit d1683dabc7ad · 2023-10-20T12:19:49.000+02:00
diff --git a/.gitmodules b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "external/SPIRV-Tools"]
 	path = external/SPIRV-Tools
 	url = git@github.com:Devsh-Graphics-Programming/SPIRV-Tools.git
+[submodule "external/SPIRV-Headers"]
+	path = external/SPIRV-Headers
+	url = git@github.com:Devsh-Graphics-Programming/SPIRV-Headers.git
diff --git a/external/SPIRV-Headers b/external/SPIRV-Headers
@@ -0,0 +1 @@
+Subproject commit 4183b260f4cccae52a89efdfcdd43c4897989f42
