feat(dashboard): rework create variant flow (#9132)

**What**
- new Create variant flow which allows for pricing and inventory creation as well

---

https://github.com/user-attachments/assets/75ddcf5a-0f73-40ca-b474-2189c5e2e297

---

CLOSES CC-345

packages/admin/dashboard/src/i18n/translations/en.json

@@ -536,8 +536,9 @@
         "header": "Edit Variant"
       },
       "create": {
-        "header": "Create Variant"
+        "header": "Variant details"
       },
+      "deleteWarning": "Are you sure you want to delete this variant?",
       "pricesPagination": "1 - {{current}} of {{total}} prices",
       "tableItemAvailable": "{{availableCount}} available",
       "tableItem_one": "{{availableCount}} available at {{locationCount}} location",
@@ -551,6 +552,8 @@
           "inventoryItems": "Go to inventory item",
           "inventoryKit": "Show inventory items"
         },
+        "inventoryKit": "Inventory Kit",
+        "inventoryKitHint": "Does this variant consist of several inventory items?",
         "validation": {
           "itemId": "Please select inventory item.",
           "quantity": "Quantity is required. Please input a positive number."