chore: add HTTP response status codes

This codes were taken from the HTTPClient library (the arduino library for the ESP32)

Author: asantiagod

Diff for: src/HttpClient.h

@@ -38,6 +38,69 @@ static const int HTTP_ERROR_INVALID_RESPONSE =-4;
 #define HTTP_HEADER_USER_AGENT     "User-Agent"
 #define HTTP_HEADER_VALUE_CHUNKED  "chunked"
 
+/// HTTP codes see RFC7231
+enum
+{
+    HTTP_CODE_CONTINUE = 100,
+    HTTP_CODE_SWITCHING_PROTOCOLS = 101,
+    HTTP_CODE_PROCESSING = 102,
+    HTTP_CODE_OK = 200,
+    HTTP_CODE_CREATED = 201,
+    HTTP_CODE_ACCEPTED = 202,
+    HTTP_CODE_NON_AUTHORITATIVE_INFORMATION = 203,
+    HTTP_CODE_NO_CONTENT = 204,
+    HTTP_CODE_RESET_CONTENT = 205,
+    HTTP_CODE_PARTIAL_CONTENT = 206,
+    HTTP_CODE_MULTI_STATUS = 207,
+    HTTP_CODE_ALREADY_REPORTED = 208,
+    HTTP_CODE_IM_USED = 226,
+    HTTP_CODE_MULTIPLE_CHOICES = 300,
+    HTTP_CODE_MOVED_PERMANENTLY = 301,
+    HTTP_CODE_FOUND = 302,
+    HTTP_CODE_SEE_OTHER = 303,
+    HTTP_CODE_NOT_MODIFIED = 304,
+    HTTP_CODE_USE_PROXY = 305,
+    HTTP_CODE_TEMPORARY_REDIRECT = 307,
+    HTTP_CODE_PERMANENT_REDIRECT = 308,
+    HTTP_CODE_BAD_REQUEST = 400,
+    HTTP_CODE_UNAUTHORIZED = 401,
+    HTTP_CODE_PAYMENT_REQUIRED = 402,
+    HTTP_CODE_FORBIDDEN = 403,
+    HTTP_CODE_NOT_FOUND = 404,
+    HTTP_CODE_METHOD_NOT_ALLOWED = 405,
+    HTTP_CODE_NOT_ACCEPTABLE = 406,
+    HTTP_CODE_PROXY_AUTHENTICATION_REQUIRED = 407,
+    HTTP_CODE_REQUEST_TIMEOUT = 408,
+    HTTP_CODE_CONFLICT = 409,
+    HTTP_CODE_GONE = 410,
+    HTTP_CODE_LENGTH_REQUIRED = 411,
+    HTTP_CODE_PRECONDITION_FAILED = 412,
+    HTTP_CODE_PAYLOAD_TOO_LARGE = 413,
+    HTTP_CODE_URI_TOO_LONG = 414,
+    HTTP_CODE_UNSUPPORTED_MEDIA_TYPE = 415,
+    HTTP_CODE_RANGE_NOT_SATISFIABLE = 416,
+    HTTP_CODE_EXPECTATION_FAILED = 417,
+    HTTP_CODE_MISDIRECTED_REQUEST = 421,
+    HTTP_CODE_UNPROCESSABLE_ENTITY = 422,
+    HTTP_CODE_LOCKED = 423,
+    HTTP_CODE_FAILED_DEPENDENCY = 424,
+    HTTP_CODE_UPGRADE_REQUIRED = 426,
+    HTTP_CODE_PRECONDITION_REQUIRED = 428,
+    HTTP_CODE_TOO_MANY_REQUESTS = 429,
+    HTTP_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE = 431,
+    HTTP_CODE_INTERNAL_SERVER_ERROR = 500,
+    HTTP_CODE_NOT_IMPLEMENTED = 501,
+    HTTP_CODE_BAD_GATEWAY = 502,
+    HTTP_CODE_SERVICE_UNAVAILABLE = 503,
+    HTTP_CODE_GATEWAY_TIMEOUT = 504,
+    HTTP_CODE_HTTP_VERSION_NOT_SUPPORTED = 505,
+    HTTP_CODE_VARIANT_ALSO_NEGOTIATES = 506,
+    HTTP_CODE_INSUFFICIENT_STORAGE = 507,
+    HTTP_CODE_LOOP_DETECTED = 508,
+    HTTP_CODE_NOT_EXTENDED = 510,
+    HTTP_CODE_NETWORK_AUTHENTICATION_REQUIRED = 511
+};
+
 class HttpClient : public Client
 {
 public: