What is the role of ItemDecoration in the RecyclerView component and why is it used?

ItemDecoration in RecyclerView is responsible for adding visual elements between list items or around them without modifying the items themselves. It is most commonly used to create margins, dividers (lines), or shadows between elements.

For example, if you need to add a dividing line between list items, you can create a class that inherits from ItemDecoration and override the onDraw or getItemOffsets method to draw the line or set the offsets.

This allows separating the display logic of items from their content and simplifies customizing the appearance of the list.