moved flow helpers under otg config helpers , as flow is also configu…

…ration in otg (openconfig#3548)

internal/otg_helpers/otg_flow_helpers/otgflowhelpers.go → internal/otg_helpers/otg_config_helpers/otgflowhelpers.go

@@ -1,5 +1,5 @@
-// Package otgflowhelpers provides helper functions to create different flows on traffic generator.
-package otgflowhelpers
+// Package otgconfighelpers provides helper functions to create different flows on traffic generator.
+package otgconfighelpers
 
 import (
 	"github.com/open-traffic-generator/snappi/gosnappi"