Add multi-panel Pico UDP firmware and Python LED control.

Pico panels get static IPs on 10.1.1.10–14 with per-panel LED counts, Makefile deploy targets, and Python examples for animations, sync tests, and direct Pi SPI control.

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

firmware/panel/timer.h

@@ -0,0 +1,10 @@
+#ifndef PANEL_TIMER_H
+#define PANEL_TIMER_H
+
+#include "pico/stdlib.h"
+
+void wizchip_1ms_timer_initialize(void (*callback)(void));
+bool wizchip_1ms_timer_callback(struct repeating_timer *t);
+void wizchip_delay_ms(uint32_t ms);
+
+#endif