(ws) add gzip and gunzip ws sub commands

ixwebsocket/IXGzipCodec.h

@@ -0,0 +1,15 @@
+/*
+ *  IXGzipCodec.h
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2020 Machine Zone, Inc. All rights reserved.
+ */
+
+#pragma once
+
+#include <string>
+
+namespace ix
+{
+    std::string gzipCompress(const std::string& str);
+    bool gzipDecompress(const std::string& in, std::string& out);
+} // namespace ix