[Feature Request] Define custom entries for background services

[Arsync]

Is your feature request related to a problem? Please describe.
Conceptual.

Describe the solution you'd like
Need an option to have independent entry points for background services like oidc-client silent token renewal process (runned within iframe). It takes package from node_modules for client side and doesn't use Quasar or Vue, but uses its own html file. This entries must not being included into index.html as part of main entry (app) with HtmlWebpackPlugin default option 'chunks: all'.
https://github.com/quasarframework/quasar/blob/dev/app/lib/webpack/inject.html.js

I think, it's closer to MPA behavior. But additional page builded without Vue.

Additional context
Related to this question

[rstoenescu]

This sounds like a separate project (not created by Quasar CLI) is needed with a basic custom webpack setup which will generate your extra assets.

[Arsync]

Main app authentication is not working without this thing - I've put it to empty VueComponent for 'silent-renew' router path. It will be always loaded within iframe at all pages of the main app for background communications to IdentityServer with redirects, staying on current page.