Adjusted includes in scene module

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

modules/scene/include/vkcv/scene/Mesh.hpp

@@ -2,6 +2,7 @@
 
 #include <glm/mat4x4.hpp>
 
+#include <vkcv/asset/asset_loader.hpp>
 #include <vkcv/camera/Camera.hpp>
 
 #include "MeshPart.hpp"

modules/scene/include/vkcv/scene/Node.hpp

@@ -2,6 +2,7 @@
 
 #include <vector>
 
+#include <vkcv/asset/asset_loader.hpp>
 #include <vkcv/camera/Camera.hpp>
 
 #include "Bounds.hpp"

modules/scene/include/vkcv/scene/Scene.hpp

@@ -5,6 +5,7 @@
 
 #include <vkcv/Core.hpp>
 #include <vkcv/Event.hpp>
+#include <vkcv/asset/asset_loader.hpp>
 #include <vkcv/camera/Camera.hpp>
 #include <vkcv/material/Material.hpp>