[feature] new debounce plugin merge request

[gjssss]

Hi! @owen-m1 I have wrote a sortable plugin. After using it, users must stop for a period of time if they want to place elements on the move. It is very useful when the element is very complex and you don't want to see the DOM that changes frequently during dragging. I want to ask if I can add a plugin to the sortable code. Do you think this plugin is needed? Here is my plugin repo. sortablejs-plugin-debounce and Here is a preview