🦈 IMP: Add a King SEE Value

[TheBlackPlague]

🎯 Summary

The current SEE values used to approximate SEE are missing a value for the King Piece. While typically not required, this value can be a good addition for future accurate SEE algorithms. This PR adds that value.

👏 Acknowledgements

NA

📈 ELO

STC:

ELO   | 1.21 +- 2.79 (95%)
SPRT  | 10.0+0.10s Threads=1 Hash=16MB
LLR   | 2.96 (-2.94, 2.94) [-3.00, 1.00]
GAMES | N: 30504 W: 7910 L: 7804 D: 14790

LTC:

ELO   | 0.36 +- 2.02 (95%)
SPRT  | 60.0+0.60s Threads=1 Hash=256MB
LLR   | 2.96 (-2.94, 2.94) [-3.00, 1.00]
GAMES | N: 53968 W: 12899 L: 12843 D: 28226