[Hierarchical Royal Road]: Implemented hierarchical Royal Road example

Implemented the hierarchical Royal Road example, which shows the concepts of
building blocks, "properties", and lookup depth.

Signed-off-by: Sebastian Lenartowicz <slenarto@uoguelph.ca>
[Hierarchical RR Example]: Cleaned up memory leaks

Cleaned up the memory leaks in the Hierarchical Royal Road fitness function.

Signed-off-by: Sebastian Lenartowicz <slenarto@uoguelph.ca>