Walks the pin-knockdown list applying strike/spare bonuses through
a 10-frame counter:
strike (10): score 10 + next 2 throws, advance i+1
spare (a + b = 10): score 10 + next 1 throw, advance i+2
open (a + b < 10): score a + b, advance i+2
Frame ten special-cases are handled implicitly: the input includes
bonus throws naturally and the while-loop terminates after frame 10.
bowling_score [10; 7; 3; 9; 0; 10; 0; 8; 8; 2; 0; 6;
10; 10; 10; 8; 1]
= 20+19+9+18+8+10+6+30+28+19
= 167
131 baseline programs total.