Added support for async csv reading.

[jorgecarleitao]

Using futures::{AsyncRead, AsyncSeek} together with csv_async crate.

See the new example in examples/ for a detail on how to use this.

[codecov]

Codecov Report

Merging #562 (d020b4d) into main (5fc843d) will increase coverage by 0.07%.
The diff coverage is 68.80%.

@@            Coverage Diff             @@
##             main     #562      +/-   ##
==========================================
+ Coverage   78.92%   78.99%   +0.07%     
==========================================
  Files         382      392      +10     
  Lines       24276    24787     +511     
==========================================
+ Hits        19160    19581     +421     
- Misses       5116     5206      +90     

Impacted Files	Coverage Δ
src/io/csv/mod.rs	0.00% <0.00%> (ø)
src/io/csv/read/reader.rs	64.28% <ø> (+21.42%)	⬆️
src/io/csv/read_async/mod.rs	0.00% <0.00%> (ø)
src/io/csv/read_utils.rs	56.69% <56.69%> (ø)
src/io/csv/read_async/reader.rs	64.28% <64.28%> (ø)
src/io/csv/read_async/infer_schema.rs	79.16% <79.16%> (ø)
src/io/csv/utils.rs	80.76% <80.76%> (ø)
src/io/csv/read/deserialize.rs	100.00% <100.00%> (+38.46%)	⬆️
src/io/csv/read/infer_schema.rs	95.45% <100.00%> (+12.12%)	⬆️
src/io/csv/read_async/deserialize.rs	100.00% <100.00%> (ø)
... and 14 more

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