dns: implement GetHostByName redirection (backend TODO)

stratosphere/ams_mitm/source/dns_mitm/sfdnsres_shim.h

@@ -0,0 +1,19 @@
+/**
+ * @file sfdnsres_shim.h
+ * @brief IPC wrapper for dns.mitm.
+ * @author SciresM
+ * @copyright libnx Authors
+ */
+#pragma once
+#include <switch.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Command forwarders. */
+Result sfdnsresGetHostByNameRequestWithOptionsFwd(Service *s, u64 process_id, const void *name, size_t name_size, void *out_hostent, size_t out_hostent_size, u32 *out_size, u32 options_version, const void *option, size_t option_size, u32 num_options, s32 *out_host_error, s32 *out_errno);
+
+#ifdef __cplusplus
+}
+#endif