World Downloader mod - Clarify the rules, and some thoughts

This was a well known mod among OG Factions players, and something they will likely want to know. Currently it's not listed on the mods list as "allowed" or "disallowed" Also, consider that Litematica can be used in a similar way as a "loophole". To be clear, I think Litematica should remain ALLOWED for building, but if world downloader is disallowed, using it to, for example, save a schem of an entire chunk should be disallowed. If world downloader is disallowed, this might also need to be clarified. I think it should be explicitly clarified if this is an allowed or disallowed mod. In terms of if world downloader should remain disallowed (as is the case on SMP to my knowledge), or should be allowed (for Factions only), here are my thoughts. If you want underground bases to be viable, I tend to think it's best to keep it DISALLOWED. This allows for underground claimed bases to have some viability, as it's not obvious where the base is, especially if the faction building it doesn't build at bedrock, but a random Y height between bedrock and surface. Cores can be seen through walls, but ideally (if some of the other suggestions are implemented), new factions won't immediately place a core. CONTINUED IN COMMENT