Add support to compute hash on list of struct

[acquamarin]

This PR supports compute hash on list of struct.

[codecov]

Codecov Report

Attention: Patch coverage is 94.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 92.09%. Comparing base (c1f68cd) to head (219ed69).
Report is 2 commits behind head on master.

Files	Patch %	Lines
src/function/vector_hash_functions.cpp	93.87%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3157      +/-   ##
==========================================
+ Coverage   91.95%   92.09%   +0.13%     
==========================================
  Files        1168     1168              
  Lines       44085    44087       +2     
==========================================
+ Hits        40538    40601      +63     
+ Misses       3547     3486      -61     

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[andyfengHKU]

Cool hack. But let's also open an issue about having selVector having size more than 2048. I think null mask need to change as well.