Add a scenario simulation action

[mayanje]

This action will allow to simulate a scenario without performing any comparison result, just for submitting it to the LSP server and, reading resulting LSP messages.
Thus only client LSP messages of te scenario will sent to the server.

[mayanje]

I good feature will be to able to execute the scenario step by step, that is to say with next client message action. The user will decide on sending the next message.