add convenience script to start/stop the bot - #392

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8, actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/