Add a profile plot similar to the neighborhood plots

Add a profile how often certain positions inside the regions, such as the start, the middle and the end overlap with a certain property.

For example, a profile plot showing 5,10,15,11,6 for the overlap of set of regions with CGIs will show that the 5'end overlaps in 5%, the 1/4 point overlaps in 10%, the middle point overlaps in 15% etc and would be indicative that the middle of the regions tend to be more overlapping with CGIs than the ends.