Bracket Notation With Number On Object

Test Data:

```json
{
   "0":"value"
}
```

Selector:

```
$[0]
```

Result (Proposal A):

```diff
--- Expected
+++ Actual
@@ @@
-'[]'
+'["value"]'
```

https://cburgmer.github.io/json-path-comparison/results/bracket_notation_with_number_on_object.html