Method for claiming all chunks within a given area

[CrazyPyroEagle]

Could you please add a way of claiming an area of chunks?
It'd make it massively easier for claiming large areas as we wouldn't have to spam chat with "Claimed this chunk for $x"... And it also means it would be a lot quicker.
For example one could mark out the outline of the chunks (somehow) and then run a command to claim all chunks within the outline including the outline itself (this is just an example of how it could be).

[hsyyid]

Done for /polis adminclaim... will have to figure out if it's plausible to make it possible for normal Polis'.