update_score: Update Score with Advantage Final Set
In skoval/inmatch_api: Dynamic In-Match Prediction

Check score change based on result of current point and return score in terms of serving player of the previous point

1	update_score(pointa, pointb, gamea, gameb, seta, setb, bestof3 = T)

`bestof3`	Logical indicator if best-of-3 match
`point_a`	Numeric game points won by current server at start of point
`point_b`	Numeric game points won by current returner at start of point
`game_a`	Numeric games won by current server in the current set
`game_b`	Numeric games won by current returner in the current set
`set_a`	Numeric sets won by current server
`set_b`	Numeric sets won by current returner