Support ScanIndexForward property in DynamoDB queries

It seems there's no way to set the ScanIndexForward property on a DynamoDB query. This is problematic when running a query with a key condition of #pk = :pk and begins_with(#sk, :sk), for example.

HI @bilal! Thanks for the feature request, as discussed on chat, using the 'Use JSON parameter editor' option in your query is the current workaround. Leaving this feature request open for supporting ScanIndexForward as a parameter in the visual editor!