Use _mm512_popcnt_epi64 to speedup hamming distance evaluation. (#4020)

Summary:
The `_mm512_popcnt_epi64` intrinsic is used to accelerate Hamming distance calculations in `HammingComputerDefault` and `HammingComputer64`.

Benchmarking with [bench_hamming_computer](https://github.com/facebookresearch/faiss/blob/main/benchs/bench_hamming_computer.cpp) on AWS [r7i](https://aws.amazon.com/ec2/instance-types/r7i/) instance shows a performance improvement of up to 30% compared to AVX-2.

This PR depends on [PR#4025](#4025)

Pull Request resolved: #4020

Reviewed By: junjieqi

Differential Revision: D67650183

Pulled By: mengdilin

fbshipit-source-id: 17e5b68570dced1fea0b885dd4e67c17dfc7bece

faiss/CMakeLists.txt

@@ -230,6 +230,7 @@ set(FAISS_HEADERS
   utils/hamming_distance/hamdis-inl.h
   utils/hamming_distance/neon-inl.h
   utils/hamming_distance/avx2-inl.h
+  utils/hamming_distance/avx512-inl.h
 )
 
 if(NOT WIN32)