feat: Support numerical arrays in bin.reinterpret

[balbok0]

Follow-up to: #20263 Related to: #18991

Adds support for casting binary into arrays of known size. This includes nested shapes (using flattening and reshaping).

Note that unknown size arrays (i.e. lists) are not supported. I think this is fine, since in majority of cases array size is known.

[codecov]

Codecov Report

Attention: Patch coverage is 78.80795% with 32 lines in your changes missing coverage. Please review.

Project coverage is 79.00%. Comparing base (a6fffd4) to head (820e44b).

Files with missing lines	Patch %	Lines
crates/polars-core/src/datatypes/dtype.rs	34.21%	25 Missing ⚠️
...c/chunked_array/binary/cast_binary_to_numerical.rs	92.30%	4 Missing ⚠️
...s/polars-ops/src/chunked_array/binary/namespace.rs	92.50%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #20456    +/-   ##
========================================
  Coverage   79.00%   79.00%            
========================================
  Files        1563     1563            
  Lines      220449   220587   +138     
  Branches     2488     2488            
========================================
+ Hits       174157   174271   +114     
- Misses      45719    45743    +24     
  Partials      573      573            

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