bundled metamask for CDN usage
https://www.jsdelivr.com/package/npm/backbone-metamask-bundle
https://cdn.jsdelivr.net/npm/backbone-metamask-bundle@1.0.0
https://cdn.jsdelivr.net/npm/backbone-metamask-bundle@1.0.0/bundle.min.js
<script
src="https://cdn.jsdelivr.net/npm/backbone-metamask-bundle@1.0.0/bundle.js"
integrity="sha256-7Ftq/i3jpi7vBJ7OWGS8pft35OIk/mdCN7MiuSPpcRQ="
crossorigin="anonymous"
></script>MIT