Dissolution of marriage — Marital settlement agreement — Indemnity — Hold harmless agreement in marital settlement agreement is a form of an indemnification agreement, and family court erroneously misinterpreted hold harmless provision as a prevailing party attorney’s fee provision — Duty to indemnify is enforceable regardless of whether indemnitee prevails — Hold harmless agreement required husband to indemnify wife for her expenditures in defending her alimony and attorney’s fees award in separate litigation seeking to satisfy husband’s personal debt