Upload a document

curl --request POST \
  --url http://localhost:8787/api/v1/documents/upload

{
  "success": true,
  "message": "<string>",
  "data": {
    "id": 123,
    "fileName": "<string>",
    "fileType": "<string>",
    "uploadDate": "<string>",
    "size": "<string>",
    "status": "<string>",
    "metadata": {
      "size": 123,
      "mimeType": "<string>",
      "sizeInKb": 123,
      "extension": "<string>",
      "uploadedBy": "<string>",
      "contentType": "<string>",
      "storagePath": "<string>",
      "lastModified": "<string>",
      "originalName": "<string>",
      "signedUrlExpiry": "<string>",
      "uploadTimestamp": "<string>",
      "processingStatus": "<string>"
    }
  }
}