Feat/secure guest

[olzzon]

guest.js limits functionality so a user don't have access to director mode, host and filesharing.
The guest.html is a copy of main.html with the added import of guest.js just after lib.js

Setting up a ninja server with to urls. 1 pointing to index.html (with full functionality, and security for accessing) and one pointing to guest.html (with full access for others), ensures that an external user receiving a "solo view link", (replaces with the guest URL) can't mess around in director mode.

I'm not in love with the concept of copying the full main.html to guest.html, so if anyone can recommend a better way of reusing main.html into guest.html
😊

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