Add curly brackets automatically for methods and classes

## Describe the solution you would like
When typing a left curly bracket after the signature of a new method the right bracket should be added automatically in the correct format.

E.g.
```c#
private void MyNewMethod()
```
Now we type a left bracket the result (with correct indentation) should be

```c#
private void MyNewMethod()
{

}
```

I use Debian