move icmp packet prepartion to file icmp.c

srcs/includes/ft_ping.h

@@ -5,9 +5,15 @@
 #include <stdint.h>
 #include <string.h>
 #include <sys/time.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <byteswap.h>
+
+#include <fcntl.h>
 
 #define PACKET_DATA_LENGTH 40
 
+
 typedef struct s_settings
 {
 	char	*host;
@@ -27,4 +33,6 @@ typedef struct s_icmp_echo
 	uint8_t			data[40];
 } t_icmp_echo;
 
+t_icmp_echo prepare_icmp_echo(uint16_t sequence, uint16_t identifier);
+
 #endif