dns: implement GetHostByName redirection (backend TODO)

libraries/libstratosphere/include/stratosphere/socket.hpp

@@ -14,4 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
 #include <stratosphere/socket/socket_types.hpp>
+#include <stratosphere/socket/socket_api.hpp>