feat(rust,python): Add bin.slice(), bin.head(), and bin.tail() methods

[Kevin-Patyk]

@orlp

Resolves: #21514.

[codecov]

Codecov Report

❌ Patch coverage is 84.25532% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.50%. Comparing base (4742c6a) to head (e8d02eb).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...rates/polars-ops/src/chunked_array/binary/slice.rs	78.76%	31 Missing ⚠️
crates/polars-plan/src/dsl/function_expr/binary.rs	0.00%	3 Missing ⚠️
...olars-plan/src/plans/aexpr/function_expr/binary.rs	40.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #25647      +/-   ##
==========================================
+ Coverage   79.35%   79.50%   +0.14%     
==========================================
  Files        1743     1744       +1     
  Lines      240295   240676     +381     
  Branches     3038     3038              
==========================================
+ Hits       190683   191341     +658     
+ Misses      48830    48553     -277     
  Partials      782      782              

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