Refactor benchmarks to use typed enums for engine/mode
Replaced string-based identifiers for serializer engine, I/O mode, and dispatch mode with strongly-typed enums (BenchmarkEngine, BenchmarkIoMode, BenchmarkDispatchMode). Added BenchmarkEnums.cs with ToDisplay() helpers for consistent output. Updated all benchmark implementations, DTOs, and output logic to use enums. Removed obsolete string constants from Configuration.cs. Merged allocation measurement methods in BenchmarkLoop.cs for clarity. Improves type safety, maintainability, and output consistency.
Refactor: move benchmark logic to BenchmarkLoop.cs
Moved all benchmark execution logic (RunBenchmark, RunBenchmarksForTestData, CreateSerializers) from Program.cs into a new static class BenchmarkLoop in BenchmarkLoop.cs. Program.cs now delegates benchmark runs to BenchmarkLoop, improving separation of concerns. No changes to benchmark functionality.
Refactor: move benchmark loop logic to BenchmarkLoop.cs
Refactored all benchmark execution infrastructure from Program.cs into a new internal static class BenchmarkLoop. This includes timing, allocation measurement, progress reporting, GC helpers, MemoryPack setup validation, and test data filtering. Updated Program.cs and all serializer benchmarks to use the new class. Added serAllocPct reporting in Output.cs and a PowerShell script for automated refactoring. No functional changes to benchmark logic.
Loretta