Optimize sort_updated_tracks kernel
#1143
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beomki-yeo
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improvement
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This PR optimizes the
sort_updated_trackskernel where the bitonic sort is used.The changes are quite rudimentary - using shared memory and caching the payload variable into register, etc. I could have applied the warp-level primitives as #1142 but this can be done later.
The performance improvement is quite minor (<1%) but still better than nothing