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__/exchanges/exchanges.spec.ts

@@ -67,10 +67,12 @@ medusaIntegrationTestRunner({
           "/admin/products",
           {
             title: "Test product",
+            options: [{ title: "size", values: ["large", "small"] }],
             variants: [
               {
                 title: "Test variant",
                 sku: "test-variant",
+                options: { size: "large" },
                 prices: [
                   {
                     currency_code: "usd",
@@ -89,10 +91,12 @@ medusaIntegrationTestRunner({
           "/admin/products",
           {
             title: "Extra product",
+            options: [{ title: "size", values: ["large", "small"] }],
             variants: [
               {
                 title: "my variant",
                 sku: "variant-sku",
+                options: { size: "large" },
                 prices: [
                   {
                     currency_code: "usd",