Add Legend to Tie Colors to package/filenames

[Rperry2174]

As of right now, the colors in the Flamegraphs correspond to the package of the method in that node. For example:

In the highlighted section:

• threading.py is orange
• threadloop.py is green
• base_events.py is blue

The colors are randomly selected from this array which should also have a larger list of colors so that its less likely where theres a situation where two different files randomly get assigned the same color

To make it so people are aware of logic of the coloring we need something that maps the colors to the file names they represent.

[Rperry2174]

closed in #21