Spends: StorageDescriptor<
    [Key: number],
    {
        amount: bigint;
        asset_kind: VersionedLocatableAsset;
        beneficiary: XcmVersionedLocation;
        expire_at: number;
        status: TreasuryPaymentState;
        valid_from: number;
    },
    true,
    never,
>

Spends that have been approved and being processed.