[FEATURE] Add simple export to current OMI Import Job

[fearnworks]

Add a JSONL batch export feature to GraphCap that generates files compatible with the OMI Data Repository import system.

Requirements

1. Export Format: JSONL with each line containing a complete annotation entry:

   {"parsed":{"short_caption":"Brief description","dense_caption":"Detailed description","tags_list":[{"tag":"tag1"},{"tag":"tag2"}]},"metadata":{"width":800,"height":600,"format":"jpg","url":"https://example.com/image.jpg"}}

2. Required Fields:

   • short_caption: Concise image description
   • dense_caption: Detailed image description
   • tags_list: Array of tag objects
   • Image metadata including dimensions and format
   • Valid URL to the image or null