Cowboy Pools, the Texas-based lifestyle brand known for turning stock tank pools into no-fuss, stylish backyard upgrades, is turning up the heat and bringing the chill. Just in time for summer, the company is launching a first-ever, custom 110v combination Heater and Chiller unit, called the “TempTamer”; an innovative, game-changing, all-season attachment that transforms any Cowboy Pool into a communal hot tub, cold plunge, or cool…