By Matt Hladik The Carolina Panthers have been active in free agency over the last couple of days. On Friday, they added a six-time All-Pro special teamer. Carolina signed former Los Angeles Rams punter Johnny Hekker to a three-year deal worth up to $7.6 million in total with $5 million guaranteed at signing. Hekker had spent the last 10 seasons with the Rams. From 2013-18, the Oregon State product made All-Pro every year, earning first-team honors four times and second-team recognition twice. In 2021, Hekker punted only 51 times–a byproduct of the Rams’ potent offense–for 2,252 yards, an aver…