feat: add optional ownershipType to external account schema

openapi/components/schemas/external_accounts/ExternalAccount.yaml

@@ -22,6 +22,8 @@ allOf:
         type: string
         description: Optional platform-specific identifier for this account
         example: acc_123456789
+      ownershipType:
+        $ref: ./OwnershipType.yaml
       currency:
         type: string
         description: The ISO 4217 currency code

openapi/components/schemas/external_accounts/ExternalAccountCreateRequest.yaml

@@ -18,6 +18,8 @@ allOf:
         type: string
         description: Your platform's identifier for the account in your system. This can be used to reference the account by your own identifier.
         example: ext_acc_123456
+      ownershipType:
+        $ref: ./OwnershipType.yaml
       defaultUmaDepositAccount:
         type: boolean
         description: >-

openapi/components/schemas/external_accounts/OwnershipType.yaml

@@ -0,0 +1,8 @@
+type: string
+enum:
+  - FIRST_PARTY
+  - THIRD_PARTY
+description: >-
+  Whether the external account belongs to the customer themselves (first party)
+  or to someone else (third party)
+example: FIRST_PARTY

openapi/components/schemas/external_accounts/PlatformExternalAccountCreateRequest.yaml

@@ -11,5 +11,7 @@ properties:
     type: string
     description: Your platform's identifier for the account in your system. This can be used to reference the account by your own identifier.
     example: ext_acc_123456
+  ownershipType:
+    $ref: ./OwnershipType.yaml
   accountInfo:
     $ref: ./ExternalAccountCreateInfoOneOf.yaml