Add fixed-list,union,map functions

[acquamarin]

Closes #2236

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (40a4a16) 89.61% compared to head (5a7f1ea) 89.63%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2278      +/-   ##
==========================================
+ Coverage   89.61%   89.63%   +0.01%     
==========================================
  Files        1024     1024              
  Lines       36031    36079      +48     
==========================================
+ Hits        32290    32340      +50     
+ Misses       3741     3739       -2     

Files	Coverage Δ
src/common/type_utils.cpp	93.25% <100.00%> (+7.00%)	⬆️
src/common/types/types.cpp	0.00% <ø> (ø)
src/function/vector_cast_functions.cpp	86.22% <100.00%> (+3.26%)	⬆️
src/include/common/type_utils.h	100.00% <ø> (ø)
src/include/common/types/types.h	100.00% <ø> (ø)
src/include/common/vector/value_vector.h	100.00% <100.00%> (ø)
...c/include/function/cast/functions/cast_functions.h	97.91% <100.00%> (ø)
src/include/function/union/functions/union_tag.h	100.00% <100.00%> (ø)

... and 7 files with indirect coverage changes

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