Add the ESP32Encoder library to the examples

On ESP8266 and esp32 platforms, the ENCODER example does not work. I propose to supplement the example with the ESP32Encoder library:
// *********************************************************************
// *************** (8) CONTROL WITH ENCODER32 **************************
// *********************************************************************
#elif(_LCDML_CONTROL_cfg == 8)

  // global defines
  #define encoder_A_pin       13
  #define encoder_B_pin       15
  #define encoder_button_pin  5    // physical pin , use internal pullup

  #define g_LCDML_CONTROL_button_long_press    800   // ms
  #define g_LCDML_CONTROL_button_short_press   120   // ms

  #include <ESP32Encoder.h> // https://github.com/madhephaestus/ESP32Encoder.git 
  ESP32Encoder encoder;

  unsigned long  g_LCDML_CONTROL_button_press_time = millis();
  bool  g_LCDML_CONTROL_button_prev                = HIGH;

// *********************************************************************
void lcdml_menu_control(void) {
  // If something must init, put in in the setup condition
  if(LCDML.BT_setup()) {
    // runs only once
    encoder.attachHalfQuad ( encoder_A_pin, encoder_B_pin );
    // init pins, enable pullups
    pinMode(encoder_button_pin  , INPUT_PULLUP);
  }

  // declare variable for this function
  int32_t g_LCDML_CONTROL_Encoder_position = encoder.getCount() / 2;
  bool g_LCDML_button                      = digitalRead(encoder_button_pin);

  // check if encoder is rotated on direction A
  if (g_LCDML_CONTROL_Encoder_position <= -1) {
    // check if the button is pressed and the encoder is rotated
    // the button is low active
    if(g_LCDML_button == LOW) {
      // button is pressed
      LCDML.BT_left();  

      // reset button press time for next detection
      g_LCDML_CONTROL_button_prev = HIGH;
    } else {
      LCDML.BT_down();
    }    

    // init encoder for the next step
    encoder.setCount ( 0 );
  }

  // check if encoder is rotated on direction B
  else if(g_LCDML_CONTROL_Encoder_position >= 1) {    
    // check if the button is pressed and the encoder is rotated
    // the button is low active
    if(g_LCDML_button == LOW) {
      // button is pressed
      LCDML.BT_right(); 

      // reset button press time for next detection
      g_LCDML_CONTROL_button_prev = HIGH;
    } else {
      LCDML.BT_up();
    }   

    // init encoder for the next step
    encoder.setCount ( 0 );
    } else {
    // check if the button was pressed for a shortly time or a long time

    //falling edge, button pressed, no action
    if(g_LCDML_button == LOW && g_LCDML_CONTROL_button_prev == HIGH) {
      g_LCDML_CONTROL_button_prev = LOW;
      g_LCDML_CONTROL_button_press_time = millis();
    }

    // rising edge, button not pressed, check how long was it pressed    
    else if(g_LCDML_button == HIGH && g_LCDML_CONTROL_button_prev == LOW) {
      g_LCDML_CONTROL_button_prev = HIGH;

      // check how long was the button pressed and detect a long press or a short press

      // check long press situation
      if((millis() - g_LCDML_CONTROL_button_press_time) >= g_LCDML_CONTROL_button_long_press) {
        // long press detected
        LCDML.BT_quit();
      }
      // check short press situation
      else if((millis() - g_LCDML_CONTROL_button_press_time) >= g_LCDML_CONTROL_button_short_press) {
        // short press detected
        LCDML.BT_enter();
      }
    } else {
      // do nothing
    }
  }
}
// *********************************************************************
// ******************************* END *********************************
// *********************************************************************
Jomelo / LCDMenuLib2

Add the ESP32Encoder library to the examples #89
