restic: move Printer interface from internal/ui/progress

Move Printer and NewNoopPrinter to internal/restic so repository does
not have to import the ui packages.

internal/ui/backup/progress.go

@@ -21,7 +21,7 @@ type ProgressPrinter interface {
 	Finish(snapshotID restic.ID, summary *archiver.Summary, dryRun bool)
 	Reset()
 
-	progress.Printer
+	restic.Printer
 }
 
 type Counter struct {