Add benchmarks using library interface

.github/actions/setup-rust/cleanup.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -e
+
+echo Cleanup workspace build artifacts and extra target output
+
+# clean just the direct members of the current workspace, with cargo metadata should generalize to all rust projects
+cargo clean -p `cargo metadata --format-version 1 | jq -r '[.workspace_members[]|split(" ")|.[0]]|join(" ")'`
+
+# remove directories in /target/ that are not named `debug` or `release`
+find ./target -maxdepth 1 -type d ! -name debug ! -name release ! -name target -exec rm -r {} \;