feat: Add AhoCorasick backed 'find_many'

[ritchie46]

closes #19923

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 16 lines in your changes missing coverage. Please review.

Project coverage is 79.46%. Comparing base (ce32455) to head (aae90d2).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../polars-ops/src/chunked_array/strings/find_many.rs	73.07%	14 Missing ⚠️
...rates/polars-plan/src/dsl/function_expr/strings.rs	95.45%	1 Missing ⚠️
.../polars-python/src/lazyframe/visitor/expr_nodes.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #19952    +/-   ##
========================================
  Coverage   79.45%   79.46%            
========================================
  Files        1555     1555            
  Lines      216168   216286   +118     
  Branches     2456     2456            
========================================
+ Hits       171765   171867   +102     
- Misses      43845    43861    +16     
  Partials      558      558            

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