Airbyte-protocol: add new fileType and rename message

protocol-models/src/main/resources/airbyte_protocol/airbyte_protocol.yaml

@@ -122,7 +122,7 @@ definitions:
           - SOURCE_RETRIEVAL_ERROR
           # Errors casting to appropriate type
           - DESTINATION_TYPECAST_ERROR
-  AirbyteFileTransferRecordMessage:
+  AirbyteFileTransferMessage:
     type: object
     additionalProperties: true
     required:
@@ -137,13 +137,7 @@ definitions:
         description: "stream the data is associated with"
         type: string
       file:
-        description: "transfer file data"
-        type: object
-        existingJavaType: com.fasterxml.jackson.databind.JsonNode
-      data:
-        description: "record data"
-        type: object
-        existingJavaType: com.fasterxml.jackson.databind.JsonNode
+        "$ref": "#/definitions/AirbyteFileType"
       emitted_at:
         description: "when the data was emitted from the source. epoch in millisecond."
         type: integer
@@ -201,6 +195,30 @@ definitions:
         type: array
         items:
           "$ref": "#/definitions/AirbyteStreamState"
+  AirbyteFileType:
+    type: object
+    additionalProperties: true
+    required:
+      - file_url
+      - file_relative_path
+      - modified
+      - bytes
+    properties:
+      file_url:
+        description: "local path to file"
+        type: string
+      file_relative_path:
+        description: "relative path to file"
+        type: string
+      source_file_url:
+        description: "source file path"
+        type: string
+      modified:
+        description: "file modified date. epoch in millisecond"
+        type: string
+      bytes:
+        description: "file size in bytes"
+        type: integer
   StreamDescriptor:
     type: object
     additionalProperties: true