Add more benchmarks for type checker

[Glyphack]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #265 will not alter performance

_{Comparing typechecker-benchmarks (fdbbe44) with main (902b364)}

Summary

✅ 4 untouched benchmarks

🆕 3 new benchmarks

Benchmarks breakdown

	Benchmark	main	typechecker-benchmarks	Change
🆕	type_checker[conformance_tests/annotations_coroutine.py]	N/A	157.6 ms	N/A
🆕	type_checker[conformance_tests/annotations_forward_refs.py]	N/A	162.3 ms	N/A
🆕	type_checker[conformance_tests/specialtypes_none.py]	N/A	153.8 ms	N/A