feat: add all generator benchmarks

[TimothyMakkison]

Add benchmarks for all source generators

DynamicTestsGeneratorBenchmarks

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
RunGenerator	2.351 ms	0.0219 ms	0.0313 ms	42.9688	11.7188	407.67 KB

InfrastructureGeneratorBenchmarks

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
RunGenerator	244.6 us	3.40 us	3.01 us	24.4141	2.9297	231.92 KB

HookMetadataGeneratorBenchmarks

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
RunGenerator	43.19 ms	0.862 ms	1.316 ms	4000.0000	1333.3333	36.42 MB

PropertyInjectionSourceGeneratorBenchmarks

Method	Mean	Error	StdDev	Median	Gen0	Allocated
RunGenerator	72.91 ms	1.955 ms	5.418 ms	70.90 ms	1000.0000	10.42 MB

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.

The PR adds comprehensive benchmark coverage for all source generators following the established patterns in the codebase. The changes are consistent, well-structured, and the performance metrics documented in the PR description provide valuable baseline data for future optimization work.