[blocked by #16, #22] Integrate the components of the leadership filter into a final product.

[hmzh-khn]

Integrate the

• hypothesis testing ([T 11/15] Implement the hypothesis filtering for the leadership filter. #22)
• Stackelberg ILQGames algorithm ([blocked by #9, Su 11/20, W 11/23] Write an initial implementation for Stackelberg ILQGames #16)

into the leadership filter I propose.