chore(bench): add benchmark script

This is neat for comparing different tools

bench.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -eu -o pipefail
+
+BASE_DIR=$HOME/git
+WARMUP=3
+
+# Hint: fd is named fdfind in Debian repos (package: fd-find)
+
+hyperfine --shell=none --warmup $WARMUP \
+	"find $BASE_DIR -name '.git' -type d" \
+	"fd --threads=1 --type=directory --prune --no-ignore-vcs --hidden '^\.git$' $BASE_DIR" \
+	"fd --threads=1 --type=directory --prune --no-ignore-vcs --hidden --glob '.git' $BASE_DIR" \
+	"project-below --base-dir $BASE_DIR --directory=.git"
+
+hyperfine --shell=none --warmup $WARMUP \
+	"find $BASE_DIR -type f -name package.json" \
+	"fd --threads=1 --type=file '^package\.json$' $BASE_DIR" \
+	"fd --threads=1 --type=file --glob package.json $BASE_DIR" \
+	"rg --threads=1 --files --glob=package.json $BASE_DIR" \
+	"project-below --base-dir $BASE_DIR --file=package.json"
+
+hyperfine --shell=none --warmup $WARMUP \
+	"find $BASE_DIR -type f -name Cargo.toml" \
+	"fd --threads=1 --type=file '^Cargo\.toml$' $BASE_DIR" \
+	"fd --threads=1 --type=file --glob Cargo.toml $BASE_DIR" \
+	"rg --threads=1 --files --glob=Cargo.toml $BASE_DIR" \
+	"project-below --base-dir $BASE_DIR --file=Cargo.toml"