New faster generator

[martinnovaak]

New legal move generator

• removing the precalculation of check on a chess moves generation
• chess move structure now fits 16 bits
• adding static eval (16 bits) into transposition table entry

8+0.08 test:

Score of dev vs old: 650 - 531 - 1181  [0.525] 2362
...      dev playing White: 536 - 74 - 570  [0.696] 1180
...      dev playing Black: 114 - 457 - 611  [0.355] 1182
...      White vs Black: 993 - 188 - 1181  [0.670] 2362
Elo difference: 17.5 +/- 9.9, LOS: 100.0 %, DrawRatio: 50.0 %
SPRT: llr 2.95 (100.1%), lbound -2.94, ubound 2.94 - H1 was accepted
Finished match