Refactored nullif

[jorgecarleitao]

• Added nullif to remaining primitives
• Made nullif panic if invalid arguments (the user can check the compute's capability to know if the dynamic dispatch is available via can_nullif)
• Renamed nullif_primitive to primitive_nullif to align with the rest of the API
• Added support to scalar version, nullif_scalar
• Added primitive_nullif_scalar

[codecov]

Codecov Report

Merging #753 (a764292) into main (2493f7d) will increase coverage by 0.15%.
The diff coverage is 42.85%.

@@            Coverage Diff             @@
##             main     #753      +/-   ##
==========================================
+ Coverage   70.80%   70.96%   +0.15%     
==========================================
  Files         313      313              
  Lines       16930    16896      -34     
==========================================
+ Hits        11988    11990       +2     
+ Misses       4942     4906      -36     

Impacted Files	Coverage Δ
src/compute/comparison/mod.rs	39.53% <ø> (ø)
src/compute/nullif.rs	0.00% <0.00%> (ø)
src/compute/utils.rs	95.65% <ø> (+17.08%)	⬆️
src/compute/comparison/primitive.rs	100.00% <100.00%> (ø)
src/io/parquet/read/nested_utils.rs	78.43% <0.00%> (+0.98%)	⬆️

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