WiFi.setHostname as alias for void hostname(name)

for WiFiNINA API compatibility

Author: JAndrassy

src/WiFi101.h

@@ -123,7 +123,8 @@ class WiFiClass
 	void config(IPAddress local_ip, IPAddress dns_server, IPAddress gateway);
 	void config(IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet);
 
-	void hostname(const char* name);
+  void hostname(const char* name);
+  void setHostname(const char* name) {hostname(name);}
 
 	void disconnect();
 	void end();