Add shebang for Node.js execution

[NullVoxPopuli]

if using npx instead of pnpm dlx, you get a syntax error without this?

https://discord.com/channels/480462759797063690/717767358743183412/1479130782982344837

[Windvis]

To clarify (for those who don't have access to the Discord). The npm docs mention the following:

Please make sure that your file(s) referenced in bin starts with #!/usr/bin/env node, otherwise the scripts are started without the node executable!

After adding this locally to the npx installed package, things work as expected again.