Added Gccmurmurhash Hashing Function (gcc Flavoured Murmur Hash) Which Uses the Same Hash Seed as Gcc #4000 (sundyli)

Why it matters

This feature introduces a hashing function compatible with GCC's Murmur hash, enabling consistent hash results with GCC's standard library. It helps users achieve hashing behavior aligned with GCC's implementation, which can be useful for compatibility and reproducibility in distributed or mixed environments.

How to use it

Use the new gccMurmurHash function in your SQL queries or expressions where hashing is required. For example, use SELECT gccMurmurHash(your_column) FROM your_table to get hash values consistent with GCC's implementation.