Streamdeck mount for BEACN Mixer

A quick remix of https://www.printables.com/model/665206-stream-deck-on-beacn-mounting-breaket Instead of using M2 screws to mount the center beam to the brackets, I combined them together to print as one whole unit.I also extended the length by 2mm eliminating the need for the pads per the original design specification. Fits the streamdeck snug and easily slides onto the beacn module.