MIAMI — The Miami Marlins are signing who they believe will be their impact bat. The Marlins are signing outfielder Jorge Soler to a three-year deal worth $36 million that includes opt outs after both the 2022 and 2023 seasons, a source confirmed to the Miami Herald on Saturday. MLB.com’s Mark Feisand was first to report. Soler, 30, is a career .246 hitter with 121 home runs (including an American League-leading 48 for the Kansas City Royals in 2019), 307 runs scored and 343 RBIs over 661 career MLB games spanning eight seasons. He was the World Series MVP for the Atlanta Braves last season af…