CLI: Refactor tests and config initialization

Signed-off-by: Michael Mayer <michael@photoprism.app>

internal/commands/faces.go

@@ -79,13 +79,12 @@ var FacesCommand = cli.Command{
 func facesStatsAction(ctx *cli.Context) error {
 	start := time.Now()
 
-	conf := config.NewConfig(ctx)
-	service.SetConfig(conf)
+	conf, err := InitConfig(ctx)
 
 	_, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	if err := conf.Init(); err != nil {
+	if err != nil {
 		return err
 	}