[#100] Fix for MacOS

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

modules/shader_compiler/include/vkcv/shader/Compiler.hpp

 #pragma once
 
 #include <filesystem>
-#include <map>
 #include <string>
+#include <unordered_map>
 
 #include <vkcv/Event.hpp>
 #include <vkcv/ShaderStage.hpp>