Replace MicroPython runtime with Pico C + W5500 firmware.

Ship UDP RGB panel firmware (eight WS2812 strips) and drop the ESP32 Wi-Fi/MicroPython stack.

Co-authored-by: Cursor <cursoragent@cursor.com>

firmware/wizchip_spi.h

@@ -0,0 +1,14 @@
+#ifndef WIZCHIP_SPI_H
+#define WIZCHIP_SPI_H
+
+#include "wizchip_conf.h"
+
+void wizchip_spi_initialize(void);
+void wizchip_cris_initialize(void);
+void wizchip_reset(void);
+void wizchip_initialize(void);
+void wizchip_check(void);
+void network_initialize(wiz_NetInfo net_info);
+void print_network_information(wiz_NetInfo net_info);
+
+#endif