[Feat] milestoneId

[wireless90]

    /**
     * Compute the milestone ID (Blake2b256 hash of the milestone essence) of a milestone payload.
     *
     * @param payload A milestone payload.
     * @returns The milestone ID.
     */
    static milestoneId(payload: MilestonePayload): MilestoneId {
        return callUtilsMethod({
            name: 'milestoneId',
            data: {
                payload,
            },
        });
    }