Basic Component to make many Pointer Events available.

ButtonEvents.cs

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;

public class ButtonEvents : MonoBehaviour,
	IPointerDownHandler,
	IPointerUpHandler,
	IPointerEnterHandler,
	IPointerExitHandler,
	IPointerClickHandler
{

	[SerializeField]
	private UnityEvent _pointerDown;

	[SerializeField]
	private UnityEvent _pointerUp;

	[SerializeField]
	private UnityEvent _pointerEnter;

	[SerializeField]
	private UnityEvent _pointerExit;

	[SerializeField]
	private UnityEvent _pointerClick;

	public UnityEvent PointerDown => _pointerDown;
	public UnityEvent PointerUp => _pointerUp;
	public UnityEvent PointerEnter => _pointerEnter;
	public UnityEvent PointerExit => _pointerExit;
	public UnityEvent PointerClick => _pointerClick;


	public void OnPointerDown(PointerEventData eventData)
	{
		PointerDown?.Invoke();
	}

	public void OnPointerUp(PointerEventData eventData)
	{
		PointerUp?.Invoke();
	}

	public void OnPointerEnter(PointerEventData eventData)
	{
		PointerEnter?.Invoke();
	}

	public void OnPointerExit(PointerEventData eventData)
	{
		PointerExit?.Invoke();
	}

	public void OnPointerClick(PointerEventData eventData)
	{
		PointerClick?.Invoke();
	}

	private void Reset()
	{
		_pointerDown ??= new UnityEvent();
		_pointerUp ??= new UnityEvent();
		_pointerEnter ??= new UnityEvent();
		_pointerExit ??= new UnityEvent();
		_pointerClick ??= new UnityEvent();
	}
}