feat: position Shape(s) within each neighborhood

[khoa-l]

• Extend ShapeChainLink in a ShapeRelativePositioningLink

Should store position data or modify position data of ShapePositioningData singleton

[buk0vec]

Impl details:
- Each NeighborhoodWrapper now has a list of Shapes that corresponds to the list of JavaEntities that it holds
- Each shape is 100x100 pixels
- If a class implements an interface or extends a class that is also in that immediate neighborhood, it should be positioned adjacent/close to it
- Shapes should some amount of padding between them
- Shapes are positioned starting at the top-left of the neighborhood (subneighborhoods will later be positioned under)
- You should make some sort of decision on the maximum width of a row of Shapes (maybe like the square root of entities.size()? idk)
- For each neighborhood, assign each shape a coordinate pair in pixels relative to the top-left of the neighborhood.
- Please set entityYBound to mark where we can start placing neighborhoods (directly under the lowest entity)