V100 SXM2 pinout and NVLink reference

A public reference kit has been released for NVIDIA V100 SXM2 modules, providing pin mappings, connection plans, and connector-only KiCad resources for developing custom carrier boards with NVLink connections for two- and four-GPU configurations. The kit includes print editions, library-path help, and change notes to identify reference editions. The kit is not a hardware-qualified carrier board and requires an external clock for NVLink and PCIe connections.