By Colette Bennett Is the new addition a win for Taco Bell? As I have observed many times before in TheStreet’s coverage of the fast-food market, having a constantly rotating stable of new items on the menu is basically essential to the success of just about any fast-food establishment. And while I am more than aware that the only reason that any chain does this is to retain my attention and get my money, hey, I have to eat. And while I would love to say I never eat fast food and prepare only nutritious, organic foods for all my meals that I harvested by hand in my own backyard, I am an imperf…