Standardize build metadata and code formatting

[tillig]

Summary

• Standardize .pre-commit-config.yaml, .editorconfig, build/stylecop.json, build/Source.ruleset, build/Test.ruleset to match Autofac core
• Update default.proj Package target to pack individual projects
• Apply dotnet format code formatting
• Fix SA1201 member ordering (constructors before properties)
• Fix SA1404 SuppressMessage justifications

Test plan

• CI build passes
• All tests pass
• pre-commit run --all-files passes

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.71%. Comparing base (f5d8694) to head (d49dc53).

Files with missing lines	Patch %	Lines
...Scenario.InternalsVisible/InternalsVisibleActor.cs	0.00%	1 Missing ⚠️
...nternalsVisible/InternalsVisibleStatefulService.cs	0.00%	1 Missing ⚠️
...ternalsVisible/InternalsVisibleStatelessService.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #65   +/-   ##
========================================
  Coverage    50.71%   50.71%           
========================================
  Files           12       12           
  Lines          211      211           
  Branches        21       21           
========================================
  Hits           107      107           
  Misses         103      103           
  Partials         1        1           

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