Upload template

curl --request POST \
  --url https://api.example.com/api/v1/templates \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "filename": "<string>",
  "org_name": "<string>",
  "file_size": 123,
  "metadata": {
    "category": "<string>",
    "tags": [
      "<string>"
    ],
    "description": "<string>",
    "version": "<string>"
  }
}
'

{
  "template_id": "<string>",
  "upload_url": "<string>",
  "expires_in": 123,
  "status": "pending",
  "upload_method": "signed_url",
  "max_file_size": 10485760,
  "allowed_extensions": [
    "<string>"
  ]
}