feat: support message signing for FLR and MON#7764

benkelcher-bitgo merged 1 commit intomasterBitGo/BitGoJS:masterfrom

derek/SC-4611-support-msg-signing-for-flr-and-monBitGo/BitGoJS:derek/SC-4611-support-msg-signing-for-flr-and-monCopy head branch name to clipboard