Sotirissl/new decompression workers

[sotirissl]

Improve parallel workers for decompression

Planner may also choose parallel plans when decompressing chunks.
Can use for decompression as many workers wants per chunk.

Make use of PostgreSQL function
create_plain_partial_paths()
for create parallel plans

Co-authored-by: Jan Kristof Nidzwetzki [email protected]

[codecov]

Codecov Report

Merging #5696 (50a27d3) into main (8e69a99) will decrease coverage by 10.79%.
The diff coverage is 100.00%.

❗ Current head 50a27d3 differs from pull request most recent head 7f37842. Consider uploading reports for the commit 7f37842 to get more accurate results

@@             Coverage Diff             @@
##             main    #5696       +/-   ##
===========================================
- Coverage   90.98%   80.20%   -10.79%     
===========================================
  Files         230      231        +1     
  Lines       54473    48174     -6299     
  Branches        0    11991    +11991     
===========================================
- Hits        49564    38636    -10928     
+ Misses       4909     4269      -640     
- Partials        0     5269     +5269     

Impacted Files	Coverage Δ
src/import/allpaths.c	68.24% <100.00%> (-12.38%)	⬇️
tsl/src/nodes/decompress_chunk/decompress_chunk.c	83.55% <100.00%> (-10.97%)	⬇️

... and 218 files with indirect coverage changes

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[sotirissl]

Pushed and Merged with Improve parallel workers for decompression #5655
#5655