Fixed error in FixedSizeListArray::new_null

[jorgecarleitao]

Also added tests for most of its functionality.

[codecov]

Codecov Report

Merging #1114 (ecb93fd) into main (b942a84) will increase coverage by 0.39%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1114      +/-   ##
==========================================
+ Coverage   81.33%   81.72%   +0.39%     
==========================================
  Files         367      367              
  Lines       35458    35832     +374     
==========================================
+ Hits        28840    29284     +444     
+ Misses       6618     6548      -70     

Impacted Files	Coverage Δ
src/array/fixed_size_list/mod.rs	80.24% <100.00%> (+17.12%)	⬆️
src/io/parquet/read/deserialize/boolean/basic.rs	93.41% <0.00%> (-1.08%)	⬇️
src/array/utf8/mod.rs	90.17% <0.00%> (-0.62%)	⬇️
src/io/ipc/read/reader.rs	95.66% <0.00%> (-0.37%)	⬇️
...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/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%)	⬆️
src/array/equal/mod.rs	83.58% <0.00%> (+2.23%)	⬆️
... and 8 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b942a84...ecb93fd. Read the comment docs.