initial provider (#2)

framework/medusa/utils/normalizers/normalize-customer.ts

@@ -0,0 +1,9 @@
+import { Customer } from '@commerce/types/customer'
+import { Customer as MedusaCustomer } from '@medusajs/medusa-js/lib/types'
+
+export function normalizeCustomer(customer: MedusaCustomer): Customer {
+  return {
+    firstName: customer.first_name,
+    lastName: customer.last_name,
+  }
+}