Prefetch hash data

[roshkhatri]

This is continuation of #2180
Will post the benchmark results

[codecov]

Codecov Report

❌ Patch coverage is 14.81481% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.34%. Comparing base (c1b4129) to head (d9d6e88).
⚠️ Report is 13 commits behind head on unstable.

Files with missing lines	Patch %	Lines
src/memory_prefetch.c	0.00%	23 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #3093      +/-   ##
============================================
+ Coverage     74.32%   74.34%   +0.01%     
============================================
  Files           129      129              
  Lines         71011    71035      +24     
============================================
+ Hits          52778    52808      +30     
+ Misses        18233    18227       -6     

Files with missing lines	Coverage Δ
src/valkey-benchmark.c	61.81% <100.00%> (+0.10%)	⬆️
src/memory_prefetch.c	10.52% <0.00%> (-1.42%)	⬇️

... and 26 files with indirect coverage changes

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[xbasel]

#2180 is still active. I've modified it, pending review.