add extern function for http message parsing

+ wip compare fields server and script
+ g tout cassey

srcs/webserv/parsing_message_http.hpp

@@ -0,0 +1,33 @@
+
+#ifndef PARSING_MESSAGE_HTTP_HPP
+# define PARSING_MESSAGE_HTTP_HPP
+
+# include <iostream>
+# include <string>
+# include <vector>
+# include <map>
+# include "utils.hpp"
+
+size_t
+	parse_http_first_line(std::string message, std::vector<std::string> &line);
+
+std::map<std::string, std::string>
+	parse_http_headers(std::string message);
+
+std::string
+	parse_http_body(std::string message);
+
+//	http message structure :
+//
+//	start-line
+//		request-line
+//			method SP target SP version
+//		response-line
+//			version SP status SP reason
+//	header-fields
+//		name ":" SP value
+//	CRLF
+//	body
+
+#endif
+