Loop support with fake and tera

based on tera, I tried this…

```
👤ingenthr at 🏠local in 🗄 default
> fake --template order-wip.tera --num-rows 5 | get content | get order_items
error: Error: expected `,` or `]` at line 11 column 26

👤ingenthr at 🏠local in 🗄 default
> open order-wip.tera
{
"id": "{{ uuid() }}",
"content": {
"order_by": "{{ userName() }}",
"address": "{{ numberWithFormat(format='^####') ~ ' ' ~
streetName() ~ '\n' ~
cityName() ~ ', ' ~
stateAbbr() ~ ' ' ~
postCode() }}",
"order_items": [
{% for i in range(end=5) %}
{ "qty": "{{ numberWithFormat(format='^#')}}",
"item": "{{ words(num=3) }}" }
{% endfor %}
],
"type": "order"
}
}
```

But it does not work. There does not seem to be looping support?