feat(core-flows, product): options checks on product create/update (#9171)

**What**
- validate that variants are unique with respect to options on product update/create and variant update/create
- validate that the product has options upon creation
- ensure variants have the same number of option values as the product has options
- admin error handling
- update tests

---

FIXES FRMW-2707 CC-556

integration-tests/modules/__tests__/common/workflows.spec.ts

@@ -35,9 +35,11 @@ medusaIntegrationTestRunner({
             "/admin/products",
             {
               title: "product 1",
+              options: [{ title: "size", values: ["x", "l"] }],
               variants: [
                 {
                   title: "variant 1",
+                  options: { size: "x" },
                   prices: [{ currency_code: "usd", amount: 100 }],
                 },
               ],