Add a DeserializationSchema decorator that counts deserialize errors

I would like to propose a PR that implements a decorator for `DeserializationSchema`.

The decorator decorates an `DeserializationSchema` object. The purpose of this decorator is to catch any deserialization errors that could occur when deserializing messages. The decorator has a flag to decide to fail or not in this case. If it makes the error silent, then it would count them in a `flink.metrics.Counter` so the user can monitor the silent errors. This PR is ready to be created.

This decorator could be improved by having a sink that would be used to sink all the messages causing deserialization errors.