Update +server.ts to bypass cloudflared for self-hosting

[jumson]

added comments and alternative code to bypass firebase. Can reference folks from https://github.com/ShipBit/slickgpt/issues/6 who are trying to self-host. I also dockerized it and composed it with a cloudflared to test it all out, works like a charm. I'm not super familiar with git, so, i'll submit something to show that work. I don't expect this to be merged, just a reference for folks.

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[Shackless]

@jumson If you wrap this in a config flag like "skipFirebase", "diableShareFeatures" etc. that is disabled by default, I could merge this. I think you should also combine this with your other PR #79, right?