Build a "team builder" projection system

[ak-gupta]

Similar to #2, I'd like to have the ability to take a roster of players and be able to project a team's performance through simulation. To do that, we need to

• create a consistent translation between SPA ratings/projections and team-dependent variables (overall/lineup net rating) in the win probability model, and
• use the gamelog and schedule information to get fatigue factors (games in past 3, 5, 7 days)

We will then need an additional data cleaning pipeline to take in the initial data and iteratively build the next row.