Add DoubleSidedBench assets to creation-kit/assets/DoubleSidedBench: the FBX model (CO_DoubleSidedBench2.fbx) and associated .spp file are added as Git LFS pointers, along with the Blender source file (DoubleSidedBench.blend) and its autosave/backup (DoubleSidedBench.blend1). These files provide the new double-sided bench model and source for the creation kit.
