Add online chat

[thegostev]

The task is to add the code of an online chat so incoming users can ask questions and engage with us.

When you're ready to add the code, please ping me, I'll get a subscription and will provide the code.

[alexmorev]

@thegostev, @Alex-Pavlyuk Done. Online chat was added. Please check, test and give your feedback.

[Alex-Pavlyuk]

@thegostev have you registered the chat? because I don't see any dialog boxes

[thegostev]

All good. We ran out of trial, so for now the chat is not visible. It's tested, messages received, emails captured.