Add HTTP_HEAD to HTTPMethod

Author: ZakCodes

libraries/ESP8266WebServer/src/ESP8266WebServer.h

@@ -30,7 +30,7 @@
 #include <FS.h>
 #include "detail/mimetable.h"
 
-enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
+enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
 enum HTTPUploadStatus { UPLOAD_FILE_START, UPLOAD_FILE_WRITE, UPLOAD_FILE_END,
                         UPLOAD_FILE_ABORTED };
 enum HTTPClientStatus { HC_NONE, HC_WAIT_READ, HC_WAIT_CLOSE };
@@ -194,10 +194,10 @@ class ESP8266WebServerTemplate
   std::unique_ptr<HTTPUpload> _currentUpload;
   int              _postArgsLen;
   RequestArgument* _postArgs;
-    
+
   int              _headerKeysCount;
   RequestArgument* _currentHeaders;
- 
+
   size_t           _contentLength;
   String           _responseHeaders;