Upload Assistant Attachment

Attach a file for Oro (RO-323). Its type is detected from its content (PDF, Word .docx, Excel .xlsx, CSV, plain text or Markdown, PNG, JPEG, WebP; old .xls/.doc and other types: 415). PDF, Word and Excel are read by the AI service (nothing in the file runs: no macros, formulas or links); CSV and text here. An unreadable, encrypted or damaged file is stored as `failed` with a reason. Stored in Postgres, personal to the uploader, within `ASSISTANT_ATTACHMENT_MAX_BYTES` per file (413) and `ASSISTANT_ATTACHMENTS_WORKSPACE_MAX_BYTES` per workspace (409), deleted after `ASSISTANT_ATTACHMENT_RETENTION_DAYS`. Signed-in users only (API keys: 403).

curl -X POST "http://localhost:8000/api/v1/assistant/attachments" \  -H "X-Workspace-Id: string" \  -F file="string"

{
  "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
  "filename": "string",
  "kind": "pdf",
  "media_type": "string",
  "byte_size": 0,
  "status": "ready",
  "error": "string",
  "text_chars": 0,
  "meta": {
    "property1": null,
    "property2": null
  },
  "created_at": "2019-08-24T14:15:22Z"
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}