Add missing ui.oauth.scopes, first copy documentation from swagger-ui documentation...

The implementation is here: https://github.com/springdoc/springdoc-openapi/blob/main/springdoc-openapi-starter-common/src/main/java/org/springdoc/core/properties/SwaggerUiOAuthProperties.java#L103

Author: bramvonk

src/docs/asciidoc/ui-properties.adoc

@@ -36,6 +36,7 @@
 |springdoc.swagger-ui.oauth.realm |  | `String`. realm query parameter (for OAuth 1) added to authorizationUrl and tokenUrl.
 |springdoc.swagger-ui.oauth.appName |  | `String`. OAuth application name, displayed in authorization popup.
 |springdoc.swagger-ui.oauth.scopeSeparator |  | `String`. OAuth scope separator for passing scopes, encoded before calling, default value is a space (encoded value %20).
+|springdoc.swagger-ui.oauth.scopes |  | string array or scope separator (i.e. space) separated string of initially selected oauth scopes, default is empty array
 |springdoc.swagger-ui.csrf.enabled | `false` | `Boolean`. To enable CSRF support
 |springdoc.swagger-ui.csrf.use-local-storage | `false` | `Boolean`. To get the CSRF token from the Local Storage.
 |springdoc.swagger-ui.csrf.use-session-storage | `false` | `Boolean`. To get the CSRF token from the Session Storage.