Stream log entries lazily

[PrzemyslawKlys]

Summary

• streamline Get-IISParsedLog by chaining Skip/Take/TakeLast/SkipLast for lazy enumeration
• cover parsing of large logs with a new Pester test

Testing

• dotnet test
• pwsh -NoLogo -NoProfile -File Module/IISParser.Tests.ps1

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https://chatgpt.com/codex/tasks/task_e_68a96ad3deac832eb7317d2c5989b176

[codecov-commenter]

Codecov Report

❌ Patch coverage is 58.33333% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.80%. Comparing base (2059bdb) to head (f3fae96).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
IISParser/EnumerableExtensions.cs	58.33%	6 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #14      +/-   ##
==========================================
- Coverage   85.82%   82.80%   -3.03%     
==========================================
  Files           3        4       +1     
  Lines         127      157      +30     
  Branches       20       32      +12     
==========================================
+ Hits          109      130      +21     
- Misses         14       20       +6     
- Partials        4        7       +3     

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