Add Bluetooth examples

Co-authored-by: Peter Harper <77111776+peterharperuk@users.noreply.github.com>

pico_w/wifi/tls_client/lwipopts.h

@@ -0,0 +1,19 @@
+#ifndef _LWIPOPTS_H
+#define _LWIPOPTS_H
+
+#include "lwipopts_examples_common.h"
+
+/* TCP WND must be at least 16 kb to match TLS record size
+   or you will get a warning "altcp_tls: TCP_WND is smaller than the RX decrypion buffer, connection RX might stall!" */
+#undef TCP_WND
+#define TCP_WND  16384
+
+#define LWIP_ALTCP               1
+#define LWIP_ALTCP_TLS           1
+#define LWIP_ALTCP_TLS_MBEDTLS   1
+
+#define LWIP_DEBUG 1
+#define ALTCP_MBEDTLS_DEBUG  LWIP_DBG_ON
+
+#endif
+