Add `start:with-theme` NPM script to consuming MFEs

Add the following NPM script to consuming package.json files for micro-frontends, including frontend-template-application.

```
{
  "scripts": {
    "start:with-theme": "paragon install-theme && npm start && npm install"
  }
}
```

If a consuming project is not on the latest version, defer for now but note it as a comment on this issue.