Add CLICS Contest scoreboard.tsv endpoint and pc2 report

[lane55]

Feature Description:

Add the CLICS scoreboard.tsv endpoint and report. See more requirements at: https://clics.ecs.baylor.edu/index.php?title=Contest_API_2020#Scoreboard

Have you considered other ways to accomplish the same thing?

Not possible, or extremely time consuming and error prone.

Do you have any specific suggestions for how your feature would be **implemented in PC^2?**

Add REST end point. Add pc2 Report.

Additional context:

none

[clevengr]

The Feature Description says: Add the CLICS scoreboard.tsv endpoint and report. and then references the CLICS Scoreboard endpoint description. The CLICS Scoreboard endpoint refers to returning .json objects, not .tsv objects. It's not clear what the ".tsv" reference has to do with the feature. (Typo?)