begin implement own counter class

lib/PulseCounter/pulseCounter.h

@@ -0,0 +1,27 @@
+/**
+ * @file pulseCounter.h
+ * @author Alexander Klein (alex@kleiax.de)
+ * @brief 
+ * @version 0.1
+ * @date 2023-02-18
+ * 
+ * @copyright Copyright (c) 2023
+ * 
+ */
+
+#pragma once
+
+#include <stdint.h.h>
+#include <Arduino.h>
+#include <esp32_pcnt.h>
+
+class PulseCounter {
+    public:
+        PulseCounter(uint8_t pin, uint8_t unit);
+
+    private:
+        uint8_t pin;
+        uint8_t unit;
+
+        int16_t counter = 0;
+};