Update clap to 4.5.36

[Kobzol]

This PR updates the clap benchmark to 4.5.36. Clap is now just a workspace where the root crate only contains documentation, so I benchmark the clap_derive crate, which has no local dependencies, so rustc-perf can deal with it. I added support for selecting a workspace package to rustc-perf to support this, that was easy enough.

clap_derive is a proc-macro, we don't have that many of these in the benchmark suite.

time -p CARGO_INCREMENTAL=0 cargo check ; cargo clean
# 1.27
# 1.98

time -p CARGO_INCREMENTAL=0 cargo build ; cargo clean
# 2.07
# 2.85

time -p CARGO_INCREMENTAL=0 cargo build --release ; cargo clean
# 3.29
# 4.22

Related issue: #2024

[nnethercote]

The description should be updated to explain that it's just the proc macro part.

[nnethercote]

I think this benchmark should be renamed from clap to clap_derive, and only the clap_derive crate should be included. (The latest version appears to be 4.5.32.) I think that would remove the need for the workspace selection?

[Kobzol]

That idea also crossed my mind, although the Cargo.toml of clap_derive uses some workspace configuration options, so I would need to modify it slightly. But I suppose that's not really a big issue. So if you're fine with that, I'll do it.

I would still keep the workspace selection logic in rustc-perf, it's quite useful for local benchmarking when you want to benchmark a workspace crate that is not in the main benchmark suite.