Add script to generate license dependencies as csv (#18411)

Co-authored-by: Joseph T. Lyons <JosephTLyons@gmail.com>

script/generate-licenses-csv

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+CARGO_ABOUT_VERSION="0.6.1"
+OUTPUT_FILE="${1:-$(pwd)/assets/licenses.csv}"
+TEMPLATE_FILE="script/licenses/template.csv.hbs"
+
+if ! cargo install --list | grep "cargo-about v$CARGO_ABOUT_VERSION" > /dev/null; then
+  echo "Installing cargo-about@$CARGO_ABOUT_VERSION..."
+  cargo install "cargo-about@$CARGO_ABOUT_VERSION"
+else
+  echo "cargo-about@$CARGO_ABOUT_VERSION is already installed."
+fi
+
+echo "Generating cargo licenses"
+cargo about generate \
+    --fail \
+    -c script/licenses/zed-licenses.toml \
+    script/licenses/template.csv.hbs \
+    | awk 'NR==1{print;next} NF{print | "sort"}' \
+    > $OUTPUT_FILE
+echo "Completed. See $OUTPUT_FILE"