[DMN Designer] Data Types - Create a drag and drop mechanism

This JIRA comprehends only the drag and drop mechanism.

The component must allow horizontal and vertical indentation:

Vertical behaviour: when a row is vertically dragged, it must follow a grid of rows (like this: https://gist.github.com/karreiro/3e5fbf6b363f30eed0268e0a01190096)

Horizontal behaviour: when a row is horizontally dragged, it doesn't follow a grid, but when it's dropped, it must be nested to the element that the horizontal level: