does not support other configuration options than `url`

[hanspagel]

Describe the bug

When using the Scalar integration, the configuration is mostly ignored (except url, enabled and path). I think it’s because we’re extending the controller and not generating the configuration properly:

v2.8.12...v2.8.13#diff-ce96e9c890a768b5beebf308a37b6118b4e4cb61419e103c7be95e8926b6750eR93-R97

Maybe we can fix with the recent version of the webjar?

scalar/scalar#6783

Or, maybe we can get rid of the controller and fix the issues you had upstream.

Wdyt?

To Reproduce
Steps to reproduce the behavior:

• Install springdoc-openapi-starter-webmvc-scalar
• Set scalar.theme=purple
• Check /scalar to see that the configuration does not have the theme key:

Scalar.createApiReference('#app',     {
  url: "http://localhost:8080/v3/api-docs"
  // this should have `theme: 'purple'` here
})

Expected behavior

All configuration options are accessible when using springdoc-openapi-starter-webmvc-scalar

Ideally, they'd be always in sync with the upstream package (and we don’t override the controller anymore?)

Additional context

THANKS FOR ADDING SCALAR, I’m so excited to see it here