Fix #403. Added more status codes based on MDN document

Author: yhirose

httplib.h

@@ -1598,25 +1598,67 @@ find_content_type(const std::string &path,
 inline const char *status_message(int status) {
   switch (status) {
   case 100: return "Continue";
+  case 101: return "Switching Protocol";
+  case 102: return "Processing";
+  case 103: return "Early Hints";
   case 200: return "OK";
   case 201: return "Created";
   case 202: return "Accepted";
+  case 203: return "Non-Authoritative Information";
   case 204: return "No Content";
+  case 205: return "Reset Content";
   case 206: return "Partial Content";
+  case 207: return "Multi-Status";
+  case 208: return "Already Reported";
+  case 226: return "IM Used";
+  case 300: return "Multiple Choice";
   case 301: return "Moved Permanently";
   case 302: return "Found";
   case 303: return "See Other";
   case 304: return "Not Modified";
+  case 305: return "Use Proxy";
+  case 306: return "unused";
+  case 307: return "Temporary Redirect";
+  case 308: return "Permanent Redirect";
   case 400: return "Bad Request";
   case 401: return "Unauthorized";
+  case 402: return "Payment Required";
   case 403: return "Forbidden";
   case 404: return "Not Found";
+  case 405: return "Method Not Allowed";
+  case 406: return "Not Acceptable";
+  case 407: return "Proxy Authentication Required";
+  case 408: return "Request Timeout";
+  case 409: return "Conflict";
+  case 410: return "Gone";
+  case 411: return "Length Required";
+  case 412: return "Precondition Failed";
   case 413: return "Payload Too Large";
-  case 414: return "Request-URI Too Long";
+  case 414: return "URI Too Long";
   case 415: return "Unsupported Media Type";
   case 416: return "Range Not Satisfiable";
   case 417: return "Expectation Failed";
+  case 418: return "I'm a teapot";
+  case 421: return "Misdirected Request";
+  case 422: return "Unprocessable Entity";
+  case 423: return "Locked";
+  case 424: return "Failed Dependency";
+  case 425: return "Too Early";
+  case 426: return "Upgrade Required";
+  case 428: return "Precondition Required";
+  case 429: return "Too Many Requests";
+  case 431: return "Request Header Fields Too Large";
+  case 451: return "Unavailable For Legal Reasons";
+  case 501: return "Not Implemented";
+  case 502: return "Bad Gateway";
   case 503: return "Service Unavailable";
+  case 504: return "Gateway Timeout";
+  case 505: return "HTTP Version Not Supported";
+  case 506: return "Variant Also Negotiates";
+  case 507: return "Insufficient Storage";
+  case 508: return "Loop Detected";
+  case 510: return "Not Extended";
+  case 511: return "Network Authentication Required";
 
   default:
   case 500: return "Internal Server Error";