fix(sfs): add missing custom endpoint output

- `sfs-custom-endpoint` was missing in output of `$ stackit config list`

Author: marceljk

internal/pkg/config/config.go

@@ -90,37 +90,37 @@ var ConfigKeys = []string{
 	IdentityProviderCustomClientIdKey,
 	AllowedUrlDomainKey,
 
+	AlbCustomEndpoint,
+	AuthorizationCustomEndpointKey,
+	CDNCustomEndpointKey,
 	DNSCustomEndpointKey,
 	EdgeCustomEndpointKey,
+	GitCustomEndpointKey,
+	IaaSCustomEndpointKey,
+	IntakeCustomEndpointKey,
+	KMSCustomEndpointKey,
 	LoadBalancerCustomEndpointKey,
 	LogMeCustomEndpointKey,
+	LogsCustomEndpointKey,
 	MariaDBCustomEndpointKey,
+	MongoDBFlexCustomEndpointKey,
 	ObjectStorageCustomEndpointKey,
+	ObservabilityCustomEndpointKey,
 	OpenSearchCustomEndpointKey,
 	PostgresFlexCustomEndpointKey,
-	ResourceManagerEndpointKey,
-	ObservabilityCustomEndpointKey,
-	AuthorizationCustomEndpointKey,
-	MongoDBFlexCustomEndpointKey,
 	RabbitMQCustomEndpointKey,
 	RedisCustomEndpointKey,
 	ResourceManagerEndpointKey,
-	SecretsManagerCustomEndpointKey,
-	KMSCustomEndpointKey,
-	ServiceAccountCustomEndpointKey,
-	ServiceEnablementCustomEndpointKey,
-	ServerBackupCustomEndpointKey,
-	ServerOsUpdateCustomEndpointKey,
 	RunCommandCustomEndpointKey,
 	SKECustomEndpointKey,
 	SQLServerFlexCustomEndpointKey,
-	IaaSCustomEndpointKey,
+	SecretsManagerCustomEndpointKey,
+	ServerBackupCustomEndpointKey,
+	ServerOsUpdateCustomEndpointKey,
+	ServiceAccountCustomEndpointKey,
+	ServiceEnablementCustomEndpointKey,
+	SfsCustomEndpointKey,
 	TokenCustomEndpointKey,
-	GitCustomEndpointKey,
-	IntakeCustomEndpointKey,
-	AlbCustomEndpoint,
-	LogsCustomEndpointKey,
-	CDNCustomEndpointKey,
 }
 
 var defaultConfigFolderPath string