ARROW-10907: [Rust] Fix Cast UTF8 to Date64

[seddonm1]

This PR fixes the behavior of a UTF8 -> Date64 conversion process to use %Y-%m-%dT%H:%M:%S rather than %Y-%m-%d with 00:00:00 time component.

It aligns with #8913.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-10907

[codecov-io]

Codecov Report

Merging #8918 (1863c08) into master (408e5be) will decrease coverage by 23.45%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master    #8918       +/-   ##
===========================================
- Coverage   75.35%   51.90%   -23.46%     
===========================================
  Files         177      173        -4     
  Lines       40821    31082     -9739     
===========================================
- Hits        30762    16132    -14630     
- Misses      10059    14950     +4891     

Impacted Files	Coverage Δ
rust/datafusion/src/physical_plan/expressions.rs	0.00% <ø> (ø)
rust/arrow/src/compute/kernels/cast.rs	96.21% <100.00%> (-0.13%)	⬇️
rust/parquet/src/column/page.rs	0.00% <0.00%> (-98.69%)	⬇️
rust/parquet/src/record/api.rs	0.00% <0.00%> (-98.15%)	⬇️
rust/parquet/src/arrow/arrow_writer.rs	0.00% <0.00%> (-97.34%)	⬇️
rust/parquet/src/basic.rs	0.00% <0.00%> (-97.27%)	⬇️
rust/parquet/src/file/properties.rs	0.00% <0.00%> (-95.73%)	⬇️
rust/parquet/src/file/serialized_reader.rs	0.00% <0.00%> (-95.62%)	⬇️
rust/parquet/src/file/writer.rs	0.00% <0.00%> (-95.11%)	⬇️
rust/parquet/src/arrow/record_reader.rs	0.00% <0.00%> (-94.54%)	⬇️
... and 44 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 cbb1ed5...1863c08. Read the comment docs.

[nevi-me]

LGTM

[Dandandan]

See latest commits in #8913. There is a default parser for the same format that also avoids parsing the format for each value (faster), and also supports the decimal fraction

[seddonm1]

Thanks @Dandandan will update.

[seddonm1]

have updated with your suggested changes. thank you very much - this helps me learn.

[alamb]

Thanks @Dandandan and @seddonm1 👍