Method is_chunked

libi2pd/HTTP.cpp:409–417

	}

	bool HTTPRes::is_chunked() const
	{
		auto it = headers.find("Transfer-Encoding");
		if (it == headers.end())
			return false;
		if (it->second.find("chunked") != std::string::npos)
			return true;
		return false;
	}

	bool HTTPRes::is_gzipped(bool includingI2PGzip) const
	{