Wip chunked decoding

+ Need to test normal body parsing
+ path_is_valid() renamed eval_file_type()
+ replaced atoi with strtol/strtoul

srcs/webserv/cgi_script.cpp

@@ -146,7 +146,7 @@ void	Webserv::_check_script_status(Client *client, std::string output)
 	if (pos != std::string::npos)
 	{
 		status_pos = pos + std::string("Status:").size();
-		client->status = atoi(output.c_str() + status_pos);
+		client->status = std::strtoul(output.c_str() + status_pos, NULL, 10);
 		::del_line_in_str(&output, pos, CRLF);
 	}
 	client->status = 200;