Vectorized hash grouping

[akuzm]

some experiments

Parts:

• Refactor vectorized grouping to prepare for hash grouping #7408
• Fix variable resolution in vectorized aggregation planning #7415
• Do not use bitwise OR on bool #7459
• Optimize array creation in vectorized aggregate functions #7460
• Put vectorized aggregation results in short-lived memory context #7461
• Vectorize aggregate FILTER clause #7458
• Vectorized aggregation with grouping by one fixed-size column #7341
• Import the UMASH hashing library #7616
• Vector agg: skip entire null words of filter bitmap #7569
• Vectorized hash grouping by a single text column #7586
• Vectorized grouping by multiple column #7754
• Fix serialized hashing for scalar fixed-width by-reference columns #7964
• Use imporved version of Postgres' simplehash table for aggregation #8006

[codecov]

Codecov Report

Attention: Patch coverage is 84.62998% with 81 lines in your changes missing coverage. Please review.

Project coverage is 81.90%. Comparing base (59f50f2) to head (7c03e46).
Report is 730 commits behind head on main.

Files with missing lines	Patch %	Lines
...odes/vector_agg/hashing/hash_strategy_serialized.c	82.19%	10 Missing and 24 partials ⚠️
...des/vector_agg/hashing/hash_strategy_single_text.c	82.08%	7 Missing and 17 partials ⚠️
tsl/src/import/ts_simplehash.h	89.43%	3 Missing and 12 partials ⚠️
.../src/nodes/vector_agg/hashing/hash_strategy_impl.c	60.00%	2 Missing and 4 partials ⚠️
...rc/nodes/vector_agg/hashing/batch_hashing_params.h	90.00%	0 Missing and 1 partial ⚠️
tsl/src/nodes/vector_agg/plan.c	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7316      +/-   ##
==========================================
+ Coverage   80.06%   81.90%   +1.83%     
==========================================
  Files         190      245      +55     
  Lines       37181    45285    +8104     
  Branches     9450    11315    +1865     
==========================================
+ Hits        29770    37089    +7319     
- Misses       2997     3730     +733     
- Partials     4414     4466      +52     

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