Check if a town can bypass the adjacent chunk check per-world - #8290

I think this looks correct, can you tell me which ways this has been tested?

ie:

• claimed a town following the rules with adjacency enabled.
• claimed an outpost in a world where they already have their town.
• claimed an outpost in a world where they dont already have their town.
• attempted to claim a 2nd outpost.

• The goal, allowing the claiming of a 5th chunk after a 2x2 on the new world, has been accomplished
• expansion is still prevented after 5 chunks in the target world if it doesn't follow the min adjacent requirement
• successfully claimed an outpost in a new world, expanded as mentioned above
• successfully claimed a second outpost in the same world, rules of adjacency still limit expansion (The outpost adjacent exception still works)

I think that claiming a outpost in a world you've already got claims in should be blocked, as those claims are not adjacent to the town in that world. Making a second outpost in that same world should also get blocked.

I believe outposts should only be allowed in other worlds, and be limited to one per world, otherwise the adjacent claims feature is effectively bypassed.

This PR doesn't interfere that behavior, even as of now players can claim multiple outposts in the same world.
If you'd like me to add it, I will do so, but I believe some towny admins may not like that. Outposts aren't always to expand to new worlds (in my case it is though)

I think it ought to be blocked, when I made it possible to make an outpost I must have not taken that into account.

Whether a town is allowed to make an outpost in a world they already have claims in could get added as a config option I guess.

I can make a separate PR for that to help out if you'd like
Any other comments about this one?

I'm happy with this one as it stands now. I think adjacent claiming rules should be per-world.

You could make a new PR for the other thing or put it into this PR, either is fine.