Could toolkit scripts be easier to create?

Currently, creating new toolkit scripts requires you to create a new file, then add a somewhat redundant item to `config.js`:

```
'drizzle/scripts/drizzle': './src/assets/drizzle/scripts/drizzle.js',
'toolkit/scripts/toolkit': './src/assets/toolkit/scripts/toolkit.js',
'drizzle/scripts/some-page': './src/assets/toolkit/scripts/some-page.js'
```

It seems like this could be simplified, at least so that the `toolkit/scripts` directory doesn't need a new entry for every single root JS package. But I might be missing something.