added timeout response (status 408)

+ added EPOLLERR and EPOLLHUP handling
+ fix root substitution for default "/" location (temp or permanent ?)
+ tested siege a little, seems good

srcs/webserv/http_status.hpp

@@ -41,6 +41,7 @@
 # define S403 "403 Forbidden"
 # define S404 "404 Not Found"
 # define S405 "405 Method Not Allowed"
+# define S408 "408 Request Timeout"
 # define S413 "413 Content Too Large"
 
 # define S500 "500 Internal Server Error"