feat: add StaticPropertyInitializationGeneratorBenchmarks

[TimothyMakkison]

Add StaticPropertyInitializationGeneratorBenchmarks

Method	Mean	Error	StdDev	Median	Gen0	Gen1	Allocated
RunGenerator	183.7 ms	6.12 ms	16.66 ms	176.5 ms	10000.0000	4000.0000	99.35 MB

[TimothyMakkison]

After rebasing, these are the new benchmarks. Were more tests that used static property initializers added recently?

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
RunGenerator	290.6 ms	5.78 ms	10.42 ms	11000.0000	3000.0000	102.34 MB

[thomhurst]

@TimothyMakkison nope! Might be environment rated?

[TimothyMakkison]

@TimothyMakkison nope! Might be environment rated?

Porbably! I reran the benchmarks under similar conditions on older commits and got the same results of around 290ms. Seems like I had a weird fluke earlier