feat(core-flows,payment,medusa,types): Refund reasons management API (#8436)

* feat(core-flows,payment,medusa,types): add ability to set and manage refund reasons

* fix(payment): validate total amount when refunding payment (#8437)

Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>

* feature: introduce additional_data to the product endpoints (#8405)

* chore(docs): Generated References (#8440)

Generated the following references:
- `product`

* chore: align payment database schema

* Update packages/core/core-flows/src/payment-collection/steps/create-refund-reasons.ts

Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

* chore: address review

---------

Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>
Co-authored-by: Harminder Virk <virk.officials@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/modules/payment/integration-tests/__tests__/services/payment-module/index.spec.ts

@@ -23,6 +23,7 @@ moduleIntegrationTestRunner<IPaymentModuleService>({
           "payment",
           "paymentCollection",
           "paymentProvider",
+          "refundReason",
         ])
 
         Object.keys(linkable).forEach((key) => {
@@ -54,6 +55,14 @@ moduleIntegrationTestRunner<IPaymentModuleService>({
               field: "paymentProvider",
             },
           },
+          refundReason: {
+            id: {
+              linkable: "refund_reason_id",
+              primaryKey: "id",
+              serviceName: "payment",
+              field: "refundReason",
+            },
+          },
         })
       })