SONAR-10154 No streaming of web services response by default

SONAR-10154 No streaming of web services response by default

- most of the WS rely on protobuf with one encapsulating object. In effect, streaming is useless in this case
- for WS relying on JsonWriter directly, if an exception was thrown when it has started writing, the WebServiceEngine error handling cannot work properly (clear response and format an error message with an appropriate HTTP response code)
- a new factory method is added to JsonWriter to have a non streamable JsonWriter. The response is effectively written when the JsonWriter is closed