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/http/__tests__/promotions/admin/promotions.spec.ts

@@ -1331,7 +1331,10 @@ medusaIntegrationTestRunner({
           const product1 = (
             await api.post(
               "/admin/products",
-              { title: "Test product 1" },
+              {
+                title: "Test product 1",
+                options: [{ title: "size", values: ["large", "small"] }],
+              },
               adminHeaders
             )
           ).data.product
@@ -1339,7 +1342,10 @@ medusaIntegrationTestRunner({
           const product2 = (
             await api.post(
               "/admin/products",
-              { title: "Test product 2" },
+              {
+                title: "Test product 2",
+                options: [{ title: "size", values: ["large", "small"] }],
+              },
               adminHeaders
             )
           ).data.product