remove matching `)/]/}` when deleting `(/[/{`

for example in this case:
```javascript
const a = (|12 + 5) * 7;
```
after pressing <kbd>Backspace</kbd>, the matching parenthesis should also be removed:
```javascript
const a = |12 + 5 * 7;
```

This can be either an action, or a configurable typing handler action...