add annotations for creating realm_roles

src/main/java/de/ozgcloud/operator/keycloak/user/OzgKeycloakUserSpec.java

@@ -123,7 +123,9 @@ class OzgKeycloakUserSpec {
 		private String roleName;
 	}
 
+	@Getter
 	@Setter
+	@Builder
 	@NoArgsConstructor
 	@AllArgsConstructor
 	static class KeycloakUserSpecRealmRole {
@@ -135,6 +137,7 @@ class OzgKeycloakUserSpec {
 		private String description;
 
 		@JsonProperty("attributes")
+		@Builder.Default
 		private Map<String, List<String>> attributes = new HashMap<>();
 	}
 }