Starts a connection to write UDP data to the remote connection
WiFiUDP.beginPacket(hostName, port);
WiFiUDP.beginPacket(hostIp, port);
hostName: the address of the remote host. It accepts a character string or an IPAddress
hostIp: the IP address of the remote connection (4 bytes)
port: the port of the remote connection (int)
1: if successful 0: if there was a problem with the supplied IP address or port