feat(config): add production configuration for gateway URL and authentication

src/BackOffice/wwwroot/appsettings.Production.json

@@ -0,0 +1,8 @@
+{
+//  "GwUrl": "https://localhost:6468",
+  "GwUrl": "https://bogw.kbs2.ir",
+  "Authentication": {
+    "Authority": "https://ids.afrino.co/",
+    "ClientId": "client_backoffice_spa"
+  }
+}