Function usd_to_market_token_amount

pub fn usd_to_market_token_amount<T>(
    usd_value: T,
    pool_value: T,
    supply: T,
    usd_to_amount_divisor: T,
) -> Option<T>
where
    T: MulDiv + Num,

Usd value to market token amount.

Returns None if the computation cannot be done.