Replace allowOres boolean with tag

[realugi]

fix #3528

ZON changes:

• all ores get .targetTags = .{.allowOres}
• for all blocks with .allowOres = true, removed .allowOres = true and added .allowOres to .tag array

Code changes:

• removed .allowOres boolean parsing
• removed allowOres check for the block when deciding whether an ore is eligible to be attached to a block.
• made .targetTags for ores be an array and be mandatory. otherwise logs error and skips registration for that ore.
• fixed a bug, where the target tags loaded from zon are allocated through the stackAllocator, which got freed immediately. Now the tag allocation uses the worldArena allocator.

Also I am very unsure about the .allowOres tag name. I considered .oreBearer, .oreBearable and .oreable. Maybe those are better?