Add ability to set custom classes and IDs for component elements

[ProfBrickz]

I am suggesting the addition of a feature that allows users to set custom classes and IDs for the iro.js color picker and its component elements. This would provide more flexibility in styling and manipulating the color picker elements through CSS and JavaScript.

for example

var colorPicker = new iro.ColorPicker('#iro', {
   className: 'primary-color-picker',
   layout: [
      {
         component: iro.ui.Wheel,
         options: {
            className: 'color-wheel'
         }
      },
      {
      component: iro.ui.Slider,
      options: {
         sliderType: 'hue',
         id: 'hue-slider'
      }
   ]
});