Method initialize

kernel/kernel/Networking/NetworkManager.cpp:19–27

	static BAN::UniqPtr<NetworkManager> s_instance;

	BAN::ErrorOr<void> NetworkManager::initialize()
	{
		ASSERT(!s_instance);
		auto manager = TRY(BAN::UniqPtr<NetworkManager>::create());
		TRY(manager->add_interface(TRY(LoopbackInterface::create())));
		manager->m_ipv4_layer = TRY(IPv4Layer::create());
		s_instance = BAN::move(manager);
		return {};
	}

	NetworkManager& NetworkManager::get()
	{