Show user's transcribed audio text

[Aran30]

Currently, when sending a voice message, the user will only receive the bot's answer.
Yet, the user is not aware of how their message got transcribed. It might be helpful to the user to either:

1. Per default show the transcribed message to the user
2. In case no fitting intent is found, show the user's message so that they can understand what went wrong
3. Show the user's transcribed message and ask if this is what they said before continuing with the execution of the state machine

I think that at least 1 or 2 might be helpful, maybe to have a bot configuration parameter to let the bot creator decide how to handle this behavior might be the way to go.