Added support to read and write Parquet's delta-bitpacked (integer encoding)

[jorgecarleitao]

This PR adds support to read Encoding::DeltaLengthByteArray, an important encoding for integer types. For now this is only supported on non-nested types.

[codecov]

Codecov Report

Merging #1226 (9d56c5d) into main (052a80a) will increase coverage by 0.02%.
The diff coverage is 88.55%.

@@            Coverage Diff             @@
##             main    #1226      +/-   ##
==========================================
+ Coverage   83.31%   83.33%   +0.02%     
==========================================
  Files         358      359       +1     
  Lines       37619    37881     +262     
==========================================
+ Hits        31342    31568     +226     
- Misses       6277     6313      +36     

Impacted Files	Coverage Δ
src/io/parquet/mod.rs	0.00% <0.00%> (ø)
src/io/parquet/read/deserialize/binary/basic.rs	80.43% <57.14%> (-1.16%)	⬇️
src/io/parquet/read/deserialize/binary/nested.rs	80.86% <58.33%> (-1.54%)	⬇️
src/io/parquet/read/deserialize/dictionary/mod.rs	76.50% <75.00%> (-0.04%)	⬇️
...c/io/parquet/read/deserialize/dictionary/nested.rs	66.11% <75.00%> (+0.28%)	⬆️
...c/io/parquet/read/deserialize/primitive/integer.rs	85.27% <85.27%> (ø)
src/io/parquet/write/mod.rs	86.35% <88.46%> (-0.16%)	⬇️
src/io/parquet/read/deserialize/nested_utils.rs	85.79% <93.75%> (+0.54%)	⬆️
src/io/parquet/write/primitive/basic.rs	98.77% <98.85%> (-0.20%)	⬇️
src/io/parquet/read/deserialize/boolean/nested.rs	74.41% <100.00%> (+0.30%)	⬆️
... and 17 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.