feat: Make it possible to show the configuration in the UI

[dukeofharen]

Feature Request

Describe the Feature Request

Right now, the configuration is only printed when starting the application in verbose modus. It would be nice to show the configuration in the UI on the "Settings" page.

Describe Preferred Solution

A new API endpoint has to be added to retrieve the configuration. Some values should be considered secure (like username, password, PFX password etc.) so these should be shown as "*" on the page. Also, make it clear the settings are read only and can NOT be changed in the UI.

Describe Alternatives

Related Code

Additional Context

If the feature request is approved, would you be willing to submit a PR?
Yes / No (Help can be provided if you need assistance submitting a PR)

[dukeofharen]