Add File status fields (#381)

Fixes #355

Author: TheoKanning

api/src/main/java/com/theokanning/openai/file/File.java

@@ -41,4 +41,16 @@ public class File {
      * Description of the file's purpose.
      */
     String purpose;
+
+    /**
+     * The current status of the file, which can be either uploaded, processed, pending, error, deleting or deleted.
+     */
+    String status;
+
+    /**
+     * Additional details about the status of the file.
+     * If the file is in the error state, this will include a message describing the error.
+     */
+    @JsonProperty("status_details")
+    String statusDetails;
 }

api/src/test/resources/fixtures/File.json

@@ -4,5 +4,7 @@
   "bytes": 175,
   "created_at": 1613677385,
   "filename": "train.jsonl",
-  "purpose": "search"
-}
+  "purpose": "search",
+  "status": "error",
+  "status_details": "File is too large."
+}