Use unlocked-scores to support more flexible custom behavior to adapt to difference vector distributions. #247
Description
Now the HKV scores was created and managed in cuda::atomic type. it constraints the score size under 64 bits. In complex contexts and data distributions, 64-bit information is insufficient to fully represent the significance of a key. Since the key is atomic and every tile lock the bucket before modify it, so could it be possible to release the lock on the scores. And make the Score as a customizable scalar type.