Rename Projekt.ino to Projekt_Arduino.ino

Rename Projekt.ino to Projekt_Arduino.ino

- Rename the main sketch file and adjust references accordingly.
- Clean up Config.h spacing and delete unused turn‑signal constants.
- Remove direction‑related LCD character data and its update logic.
- Introduce Display::startOrEnd to control LCD power on/off.
- Simplify display initialization and eliminate the old delay in the
  loop.
- Add serial debug output for the car enable state.

Display.h

@@ -13,19 +13,14 @@ class Display {
 public:
   void begin(int cols, int rows);
 
+  void startOrEnd(bool enable);
+
   void updateSpeed(int kmh);
 
   void updateRPM(int rpm);
 
   void updateGear(char gearChar);
 
-  // void updateDirection(bool leftOn, bool rightOn);
-
 private:
   rgb_lcd _lcd;
-
-  byte _leftChar[8] = { 0x00, 0x04, 0x08, 0x1F, 0x1F, 0x08, 0x04, 0x00 };
-  byte _leftCharBlink[8] = { 0x1F, 0x1B, 0x17, 0x00, 0x00, 0x17, 0x1B, 0x1F };
-  byte _rightChar[8] = { 0x00, 0x04, 0x02, 0x1F, 0x1F, 0x02, 0x04, 0x00 };
-  byte _rightCharBlink[8] = { 0x1F, 0x1B, 0x1D, 0x00, 0x00, 0x1D, 0x1B, 0x1F };
 };