junbo dai

Add xxh3 RISCV-V implementation from xxhash repo.

5

This pr resolved #4471 . Add RISCV-V implementation from [xxhash](https://github.com/Cyan4973/xxHash) repo. Relevant performance tests are reflected in xxHash pr [#1070](https://github.com/Cyan4973/xxHash/pull/1070) and [#1066](https://github.com/Cyan4973/xxHash/pull/1066) I conducted testing by replacing the hash function...

Add RISC-V Vector (RVV) Support for XXH3

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# Description ### Background Zstandard (Zstd) is a widely used high-performance compression algorithm that relies on the xxhash hash function for fast data hashing during compression and decompression. While XXH3...