🐛 Clear history on newgame

[eduherminio]

It loses some elo, but life is hard

Test  | bugfix/clear-history-on-newgame
Elo   | -6.52 +- 7.68 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | -2.26 (-2.25, 2.89) [0.00, 5.00]
Games | N: 4794 W: 1418 L: 1508 D: 1868
Penta | [197, 574, 919, 536, 171]
https://openbench.lynx-chess.com/test/147/

Test  | bugfix/clear-history-on-newgame
Elo   | -1.31 +- 6.69 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=128MB
LLR   | 0.14 (-2.25, 2.89) [-5.00, 0.00]
Games | N: 5852 W: 1645 L: 1667 D: 2540
Penta | [177, 690, 1188, 720, 151]
https://openbench.lynx-chess.com/test/149/