#[bench(manual)] for more control, including setup

[Bromeon]

Allows to have logic before and after the benchmarked logic, for setup/teardown phases:

#[bench(manual)]
fn my_benchmark() -> BenchResult {
    let heavy = expensive_but_uninteresting_computation();

    bench_measure(1, || heavy.interesting_op())
}

[GodotRust]

API docs are being generated and will be shortly available at: https://godot-rust.github.io/docs/gdext/pr-1390