Integrate running playit.gg tunnel

[seliayeu]

To run a tunnel, we must first create it (which unfortunately can't be done through the CLI -- should probably either reach out to the devs or open a ticket in the playit-agent repo since it seems like it's supposed to work), then search through the user's current tunnels and find it, and then run it.
Code that does this, assuming that the tunnel exists, can be found here. As of making this ticket, the code in main.rs goes through the general flow for running a tunnel.

[vadim-a-yegorov]

Try Open To ALL mod (for Fabric):

https://www.curseforge.com/minecraft/mc-mods/opentoall

Requires GUI.

But if you host no-GUI server and you want a good domain for it I suggest you registering a *.play.ai domain here: https://freedns.afraid.org/