docs: add benchmarks page after comparison #1655

Job	Run time
Mutation tests	7m 37s
API tests	3m 45s
Static code analysis	6m 1s
Unit tests (macos-latest)	3m 8s
Unit tests (windows-latest)	6m 29s
Benchmarks (CompleteMethodBenchmarks)	4m 46s
Unit tests (ubuntu-latest)	4m 51s
Benchmarks (CompleteEventBenchmarks)	2m 51s
Benchmarks (CompleteIndexerBenchmarks)	4m 29s
Benchmarks (CallbackBenchmarks)	2m 38s
Benchmarks (CompletePropertyBenchmarks)	4m 31s
Benchmarks (MockCreationBenchmarks)	3m 1s
Publish Tests Results	15s
	54m 22s

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