Using deprecated API methods

[itshadee]

it seems you haven't updated this repo and you are still using tokenOptions, am I right?
should we use tokenOptions or it's better to use connectionProperties instead?

[lshemesh]

A bunch of the Angular libraries also seem to be deprecated. I could not get this app to install using the instructions here https://docs.openvidu.io/en/stable/demos/openvidu-classroom/