Initial implementation of HeisserDraht buzz wire game

ESP32-C3 based hot wire game with WS2812B LED effects,
SSD1306 OLED display, debounced touch detection, and
full game state machine (IDLE → COUNTDOWN → PLAYING → GAME_OVER).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

display.h

@@ -0,0 +1,9 @@
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#include <Arduino.h>
+
+void displayInit();
+void displayUpdate();  // Called every loop, dispatches based on game state (throttled)
+
+#endif // DISPLAY_H