Added effect night_clock

include/effect_clock.h

@@ -6,12 +6,19 @@
 #include "Window.h"
 
 class ClockEffect : public Effect {
-private:
+protected:
     Window* window = new Window(0, LED_HEIGHT - 6, LED_WIDTH, 6);
 
 public:
     ~ClockEffect();
-    void loop();
-    void loop(boolean invert, CRGB fg_color, CRGB bg_color);
+    virtual void loop();
     String get_name() override { return "clock"; }
+    void loop_with_invert(bool invert);
+    void loop(boolean invert, CRGB fg_color, CRGB bg_color, uint8_t y);
+};
+
+class NightClockEffect : public ClockEffect {
+public:
+	NightClockEffect();
+	void loop() override;
 };