Add Company Attachment
Attaches a file to a Company account.
The default rate limit for this endpoint is `15` calls/min per store.
Each Company can have a maximum of `10` attachments. The following file types are supported:
```
- Image files (BMP, GIF, ICO, JPG/JPEG, PNG, SVG, TIF, TIFF, WEBP, WBMP, XBM)
- PDF
- DOC, DOCX
- XLS, XLSX
- CSV
```