openapi: add fields to submission create

openapi.yaml

@@ -1641,12 +1641,25 @@ components:
     SubmissionTriggerCreate:
       required:
       - AssetID
+      - DisplayName
+      - Creator
+      - GameID
       type: object
       properties:
         AssetID:
           type: integer
           format: int64
           minimum: 0
+        DisplayName:
+          type: string
+          maxLength: 128
+        Creator:
+          type: string
+          maxLength: 128
+        GameID:
+          type: integer
+          format: int32
+          minimum: 0
     ReleaseInfo:
       required:
       - SubmissionID