perf(collections): optimize minOf/maxOf with fast array paths

[tomas-zijdemans]

Optimizes minOf and maxOf to use the same pattern as minBy/maxBy:

• Fast path for arrays using index-based iteration
• Manual iterator for non-array iterables

Benchmark results (100K elements):

• Identity selector: ~3% faster (marginal)
• Object property selector: ~20% faster
• BigInt: ~22-25% faster
• Generator/Iterable: ~25% faster
• Small arrays (10 elements): up to 3x faster

Added tests for iterable inputs, single-element arrays, and NaN-as-first-element.

[codecov]

Codecov Report

❌ Patch coverage is 96.29630% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.22%. Comparing base (4b413cf) to head (1d4a1a5).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
collections/max_of.ts	96.29%	0 Missing and 1 partial ⚠️
collections/min_of.ts	96.29%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6936   +/-   ##
=======================================
  Coverage   94.22%   94.22%           
=======================================
  Files         584      584           
  Lines       43124    43162   +38     
  Branches     6899     6918   +19     
=======================================
+ Hits        40634    40670   +36     
  Misses       2439     2439           
- Partials       51       53    +2     

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[kt3k]

LGTM. Nice!