⚡ Flatten capture history

[eduherminio]

Replace capture history triple jagged array ([][][]) with a single dimensional one + a method to calculate the right index.

Test  | perf/capture-history-index
Elo   | 0.83 +- 1.40 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | -0.90 (-2.25, 2.89) [0.00, 3.00]
Games | 116234: +36471 -36192 =43571
Penta | [3932, 12718, 24586, 12901, 3980]
https://openbench.lynx-chess.com/test/467/

 python .\sprt.py -w 36471 -l 36192 -d 43571 -e0 -3 -e1 1
ELO: 0.834 +- 1.58 [-0.743, 2.41]
LLR: 8.97 [-3.0, 1.0] (-2.94, 2.94)
H1 Accepted