Chess engine: Stockfish 22041217 NNUE for Windows and Linux (+1,71 ELO)

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Stockfish - UCI chess engine, compiled by Topologist
Rating CEDR=3497 (2 place)

Timestamp: 1649778230
Use NNUE in low piece endgames close to the root.

This patch enforces that NNUE evaluation is used for endgame positions at shallow depth (depth <= 9).
Classic evaluation will still be used for high imbalance positions when the depth is high or there are many pieces.

Passed STC:
https://tests.stockfishchess.org/tests/view/624c193b3a8a6ac93892dc27
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 255840 W: 68024 L: 67362 D: 120454 Elo +0.90
Ptnml(0-2): 1074, 27089, 70926, 27763, 1068

Passed LTC:
https://tests.stockfishchess.org/tests/view/624e8675e9e7821808467f77
LLR: 2.94 (-2.94,2.94) <0.50,3.00>
Total: 67088 W: 17784 L: 17454 D: 31850 Elo +1.71
Ptnml(0-2): 45, 6209, 20715, 6521, 54
bench: 6602222

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