Intex Skimmer Adapter

Someone asked in the comments of the original skimmer adapter (https://www.thingiverse.com/thing:3701193) for a right angle option. I liked the way matlen67 handled the problem of aiming the angled nozzle since you can't guarantee where a 1-piece design would be aimed when installed. Use the nozzle and nut from matlen67's design.

Added a 90deg elbow to the file list. It has a tapered inlet. Since this is a suction-side connection I haven't bothered with a clamp.