Add Pico-W driver in src/drivedrivers

src/drivers/pico-w.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#if MG_ENABLE_TCPIP && MG_ARCH == MG_ARCH_PICOSDK && \
+    defined(MG_ENABLE_DRIVER_PICO_W) && MG_ENABLE_DRIVER_PICO_W
+
+#include "cyw43.h"              // keep this include
+#include "pico/cyw43_arch.h"    // keep this include
+#include "pico/unique_id.h"     // keep this include
+
+struct mg_tcpip_driver_pico_w_data {
+  char *ssid;
+  char *pass;
+};
+
+#endif