Function catalyst_toolbox::rewards::veterans::calc_final_eligible_rankings

fn calc_final_eligible_rankings(
    all_rankings: &HashMap<VeteranAdvisorId, usize>,
    eligible_rankings: HashMap<VeteranAdvisorId, usize>,
    thresholds: EligibilityThresholds,
    modifier_rate: impl Fn(Decimal) -> Decimal
) -> BTreeMap<VeteranAdvisorId, Rewards>