Stephen Amell is about to hang up the bow for good once The CW's Arrow comes to a close this season. But the lead of the superhero TV show that helped carve out what was once a niche category into something that was embraced on every level of the television landscape isn't content to rest on his laurels, so to speak. As Variety reports, Amell's already got a new lead role all ready to go in the new Starz drama, Heels. Heels, the hour-long drama which has already received an eight-episode order from Starz, takes …