Feature summary:
We need to create a new API route for rejecting a suggested statement so this can be stored in the ISA database. This new route should then be called as soon as a user clicks on the reject button.

e.g. /api/reject-suggestion

Use POST for the new route, with a JSON payload which includes all the details needed for the new entry in the suggestions table:

e.g.

{
  "file": "Example.jpg",
  "campaign_id": 1,
  "depict_item": "Q123",
  "google_vision": true,
  "google_vision_confidence": 0.6789
}

A rejection should be saved with update_status = 0. Make sure you also set update_status to 1 when you "accept" a suggestion.