I am trying to consume Northwind R/W OData service link:
http://services.odata.org/V3/(S(frik5l2zde0sxh4jiifyhqo4))/OData/OData.svc/ as
proxy/http/s
As you're using Northwind, I believe it's only for development. So you can make use of https://cors-anywhere.herokuapp.com/
to access cross origin resources.
var oModel = new ODataModel({ // required from "sap/ui/model/odata/v2/ODataModel"
serviceUrl: "https://cors-anywhere.herokuapp.com/https://services.odata.org/V2/(S(frik5l2zde0sxh4jiifyhqo4))/OData/OData.svc/"
});
Or the other way would be to disable security flag in chrome for development make use of destination settings within SCP.