Added a Library to most reference-counted classes

Former-commit-id: 3ed409a71dcd5ce4eec7672ac26f8fff00e3b136

src/Nazara/Utility/Image.cpp

@@ -1392,5 +1392,22 @@ void NzImage::ReleaseImage()
 	m_sharedImage = &emptyImage;
 }
 
+bool NzImage::Initialize()
+{
+	if (!NzImageLibrary::Initialize())
+	{
+		NazaraError("Failed to initialise library");
+		return false;
+	}
+
+	return true;
+}
+
+void NzImage::Uninitialize()
+{
+	NzImageLibrary::Uninitialize();
+}
+
 NzImage::SharedImage NzImage::emptyImage(0, nzImageType_2D, nzPixelFormat_Undefined, 1, nullptr, 0, 0, 0);
+NzImageLibrary::LibraryMap NzImage::s_library;
 NzImageLoader::LoaderList NzImage::s_loaders;