Added bonus and refactor again

Added the following flags :
-c to make a NUMBER of pings
-f to add flood mode
-i to set an interval of NUMBER seconds between pings
-l to send a NUMBER of pings as fast as possible then swapping to normal mode
-q to add quiet mode

Refactored main.c :
Made flags.c for avoiding the main() function becoming a masterclass and make the file more readable
Moved some function from main.c to utils.c

Made some change to mimic the behavior of the ping binary of inetutils2.0

Makefile

@@ -1,7 +1,8 @@
 NAME	= ./ft_ping
 
 SRCS	=	src/main.c \
-			src/utils.c
+			src/utils.c \
+			src/flags.c
 
 
 OBJ_DIR	= objs