Function chance

chance<T>(
    p: number | () => number,
    a: T | () => T,
    b: T | () => T,
    randomSource?: RandomSource,
): T
Chance of returning a or b, based on threshold p.

p sets the threshold for picking b. The higher the value (up to 1), the more likely b will be picked.
```
// 50% of the time it will return 100, 50% 110
chance(0.5, 100, 110);
// 90% of the time it will yield 110, 10% it will yield 100
chance(0.9, 100, 110);
```
Type Parameters
- T
Parameters
- p: number | () => number
  Threshold to choose option B (value or function)
- a: T | () => T
  Value or function for option A
- b: T | () => T
  Value or function for option B
- OptionalrandomSource: RandomSource
  Source of random numbers
Returns T