Feature request: template new nb

When I create a new nbdev notebook I almost always have the same structure

```
# name
> name of notebook of file ##_name.ipynb

---new-cell---

#| default_export name

---new-cell---

#| hide
from nbdev.showdoc import *

---new-cell---
...
---new-cell---

#| hide
import nbdev; nbdev.nbdev_export()
```

is there a way to use nbdev to automatically scaffold this in the nbs directory?