Added effect diamond.

include/effect_diamond.h

@@ -0,0 +1,11 @@
+#pragma once
+#include "Effect.h"
+
+class DiamondEffect : public Effect {
+private:
+	Window* window = &Window::window_with_clock;
+public:
+	void loop(uint16_t ms) override;
+	bool can_be_shown_with_clock() override;
+	String get_name() override { return "diamond"; }
+};