Upload Image

curl --request POST \
  --url https://api.example.com/api/v1/media/upload \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file'

{
  "id": "<string>",
  "attachment_type": "image",
  "file_name": "<string>",
  "mime_type": "<string>",
  "file_size": 123,
  "message": "Attachment uploaded successfully"
}