feat(medusa): Include external_id in CreateProductInput type (#2498)

.changeset/pretty-flies-juggle.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/medusa": patch
+---
+
+Include optional `external_id` property for CreateProductInput type

packages/medusa/src/types/product.ts

@@ -133,6 +133,7 @@ export type CreateProductInput = {
   mid_code?: string
   material?: string
   metadata?: Record<string, unknown>
+  external_id?: string | null
 }
 
 export type CreateProductProductTagInput = {