Added support for Decimal in build_compare

[GPSnoopy]

Fixes Issue #997.

[codecov]

Codecov Report

Merging #998 (e6307b5) into main (267cac0) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #998   +/-   ##
=======================================
  Coverage   71.41%   71.42%           
=======================================
  Files         357      356    -1     
  Lines       19799    19784   -15     
=======================================
- Hits        14139    14130    -9     
+ Misses       5660     5654    -6     

Impacted Files	Coverage Δ
src/array/ord.rs	71.60% <100.00%> (+0.35%)	⬆️
src/ffi/schema.rs	67.53% <0.00%> (-0.63%)	⬇️
src/ffi/array.rs	82.50% <0.00%> (-0.43%)	⬇️
src/types/bit_chunk.rs	100.00% <0.00%> (ø)
src/types/offset.rs
src/ffi/stream.rs	63.21% <0.00%> (+0.29%)	⬆️
src/io/avro/read/deserialize.rs	72.45% <0.00%> (+0.42%)	⬆️
src/bitmap/utils/slice_iterator.rs	87.93% <0.00%> (+1.72%)	⬆️
...c/io/parquet/read/deserialize/binary/dictionary.rs	90.90% <0.00%> (+3.03%)	⬆️

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[jorgecarleitao]

Looks great! Thanks for it!