Removed unused NativeType::to_ne_bytes

[jorgecarleitao]

This is an old function that is not really used nor needed (since ne does not take endianess into account).

Also added a bunch of tests covering from and to bytes of custom types.

[codecov]

Codecov Report

Merging #1112 (c2d01f5) into main (b942a84) will increase coverage by 0.54%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main    #1112      +/-   ##
==========================================
+ Coverage   81.33%   81.88%   +0.54%     
==========================================
  Files         367      367              
  Lines       35458    35769     +311     
==========================================
+ Hits        28840    29289     +449     
+ Misses       6618     6480     -138     

Impacted Files	Coverage Δ
src/types/native.rs	67.92% <80.00%> (+44.32%)	⬆️
src/array/utf8/mod.rs	85.62% <100.00%> (-5.18%)	⬇️
src/io/parquet/read/deserialize/boolean/basic.rs	93.41% <0.00%> (-1.08%)	⬇️
...rc/io/parquet/read/deserialize/primitive/nested.rs	87.96% <0.00%> (-0.27%)	⬇️
src/io/parquet/read/deserialize/nested_utils.rs	83.71% <0.00%> (-0.23%)	⬇️
src/io/ipc/read/reader.rs	96.38% <0.00%> (+0.36%)	⬆️
src/io/parquet/read/deserialize/boolean/nested.rs	68.10% <0.00%> (+1.04%)	⬆️
src/io/parquet/read/deserialize/binary/basic.rs	76.47% <0.00%> (+1.27%)	⬆️
...arquet/read/deserialize/fixed_size_binary/basic.rs	97.20% <0.00%> (+1.37%)	⬆️
... and 7 more

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