ethernet webserver works too

lib/WebServer/src/hardware/W5500EthClient.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <WiFiClient.h>
+#include <EthernetClient.h>
+#include "EthClient.h"
+
+class W5500EthClient : public EthClient
+{
+public:
+    explicit W5500EthClient(EthernetClient* wifiClient);
+    virtual ~W5500EthClient();
+
+    uint8_t connected() override;
+    int available() override;
+    unsigned long getTimeout(void) override;
+    int setTimeout(uint32_t seconds) override;
+    int read() override;
+    size_t write(const char *buffer, size_t size) override;
+    size_t write(Stream &stream) override;
+    size_t write_P(const char *buf, size_t size) override;
+    String readStringUntil(char terminator) override;
+    size_t readBytes(char *buffer, size_t length) override;
+    IPAddress localIP() override;
+    void stop() override;
+    void flush() override;
+
+private:
+    EthernetClient* _ethClient;
+};