Added support for pushdown projection in reading Avro

[jorgecarleitao]

This allows skipping deserializing columns when they are not required.

The speedup is proportional to the number of columns that are not needed (times the average cost of deserializing a column type over all skipped columns).

[codecov]

Codecov Report

Merging #827 (7caea8e) into main (a026b66) will decrease coverage by 0.00%.
The diff coverage is 75.60%.

@@            Coverage Diff             @@
##             main     #827      +/-   ##
==========================================
- Coverage   71.55%   71.54%   -0.01%     
==========================================
  Files         326      326              
  Lines       17581    17643      +62     
==========================================
+ Hits        12580    12623      +43     
- Misses       5001     5020      +19     

Impacted Files	Coverage Δ
src/io/avro/read/schema.rs	69.62% <50.00%> (ø)
src/io/avro/read/deserialize.rs	73.03% <74.32%> (-1.27%)	⬇️
src/io/avro/read/mod.rs	82.35% <100.00%> (+2.35%)	⬆️
src/io/avro/read_async/metadata.rs	95.00% <100.00%> (ø)
src/bitmap/utils/slice_iterator.rs	86.20% <0.00%> (-1.73%)	⬇️

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