kunstmaan/config-bundle

config/packages/kunstmaan_config.yaml

#kunstmaan_config:
    # Add your custom config entities here
#    entities:
#        - \App\Entity\CustomConfigEntity

config/routes/kunstmaan_config.yaml

KunstmaanConfigBundle:
    resource: "@KunstmaanConfigBundle/Resources/config/routing.yml"
    # If your site is not multi language, remove the "{_locale}/" part of prefix and requirements
    prefix:   /{_locale}/
    requirements:
        _locale: "%kunstmaan_admin.required_locales%"