Add simpler client side recording with RecordRTC

An alternative way to record a conference is a client side recording function implemented with RecordRTC:

This could be very useful when Jibri is not a viable solution and it’s much simpler.
a good idea would be to link the function to a specific privilege or role, in order to be able to “govern” those who offer the possibility to record the session

My two cents :smiley: