Moved to the combined LeapQuant kernels repository

The GDN and KDA kernels, workloads, benchmarks, documentation and validation results are now maintained together at humanfia-lab/leapquant.

from kernels import get_kernel
op = get_kernel("humanfia-lab/leapquant", version=1, trust_remote_code=True).kda

This repository retains its original v1 snapshot for existing users.