feat(python,rust!): Allow specifying Hive schema in read/scan_parquet

[stinodego]

Ref #15441

[codecov]

Codecov Report

Attention: Patch coverage is 85.64593% with 30 lines in your changes are missing coverage. Please review.

Project coverage is 81.13%. Comparing base (e3c2b0d) to head (5a42bea).
Report is 2 commits behind head on main.

❗ Current head 5a42bea differs from pull request most recent head 6c97719. Consider uploading reports for the commit 6c97719 to get more accurate results

Files	Patch %	Lines
crates/polars-plan/src/logical_plan/hive.rs	88.76%	10 Missing ⚠️
crates/polars-io/src/predicates.rs	80.48%	8 Missing ⚠️
...c/logical_plan/optimizer/predicate_pushdown/mod.rs	0.00%	6 Missing ⚠️
crates/polars-plan/src/logical_plan/schema.rs	84.37%	5 Missing ⚠️
crates/polars-io/src/options.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #15434   +/-   ##
=======================================
  Coverage   81.13%   81.13%           
=======================================
  Files        1362     1362           
  Lines      174820   174916   +96     
  Branches     2531     2532    +1     
=======================================
+ Hits       141836   141918   +82     
- Misses      32500    32514   +14     
  Partials      484      484           

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[ritchie46]

1 comment about Arc::unwrap... after that it can be merged. 👍