post https://rest.api.transifex.com/resource_strings_async_uploads
For more details about File uploads you can refer to File Uploads section
The response represents the file upload job. Look into the 'status'
attribute to verify that the upload has completed successfuly. If the
status is 'pending' or 'processing', then you will need to periodically
inquire about its status. Use the 'self' link, which will get you to the
/resource_strings_async_uploads/{resource_strings_async_upload_id}
endpoint.