ci_scripts: add list-packages.sh

Migrate the script from wheel_builder, with no changes.

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

ci_scripts/list-packages.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# SPDX-FileCopyrightText: 2024 Rivos Inc.
+
+# SPDX-License-Identifier: Apache-2.0
+
+set -e
+
+if [ "$#" -ne 1 ]; then
+    echo "list-packages name-prefix"
+    exit 1
+fi
+
+apt-get update -qq && apt-get install -qq -y python3 python3-venv
+python3 -m venv packages-$1-venv
+. packages-$1-venv/bin/activate
+python -m pip install --upgrade pip
+pip install -r packages.txt
+pip list > $1-installed.txt