More granular passer bonus based on the protection status of forward squares

[TheRealGioviok]

Passed STC:

Test  | extrapassers
Elo   | 2.88 +- 2.14 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=16MB
LLR   | 2.98 (-2.94, 2.94) [0.00, 3.00]
Games | N: 36584 W: 9885 L: 9582 D: 17117
Penta | [499, 4416, 8234, 4569, 574]

https://ob.cwchess.org/test/1491/

Passed LTC:

Test  | extrapassers
Elo   | 2.01 +- 1.59 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=64MB
LLR   | 2.95 (-2.94, 2.94) [0.00, 3.00]
Games | N: 52026 W: 13042 L: 12741 D: 26243
Penta | [262, 6143, 12916, 6416, 276]

https://ob.cwchess.org/test/1492/

Bench: 14878573