perf(nns): Add a benchmark for listing proposals #24206

Job	Run time
Bazel Test All	11m 25s
Bazel Build All Config Check	0s
Bazel Test macOS Intel	0s
Bazel Build Fuzzers AFL	2m 19s
Bazel Build Fuzzers	2m 5s
Python CI Tests	1m 39s
Build IC	5m 29s
Cargo Clippy Linux	4m 42s
Cargo Build Release Linux	11m 0s
Build Determinism (//publish/binaries:upload, release, build-ic/release, false)	14s
Build Determinism (//publish/canisters:upload, canisters, build-ic/canisters, false)	17s
Build Determinism (//ic-os/guestos/envs/prod:upload_disk-img, guest-os/update-img, build-ic/icos/...	22s
Build Determinism (//ic-os/hostos/envs/prod:upload_update-img, host-os/update-img, build-ic/icos/...	17s
Build Determinism (//ic-os/setupos/envs/prod:upload_disk-img, setup-os/disk-img, build-ic/icos/se...	13s
	40m 2s

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