Add `//revolve` Command

I was wanting to make more advanced circles, E.G circular buildings and couldn't find an easy way to do it other than using FACWE (which I don't want to)

The feature would work by creating a selection of your 2D plane, standing in centre point and then WorldEdit will revolve shape around you (much like FACWE and [this video)](https://www.youtube.com/watch?v=uvZD5OWT2RM)

I have considered adapting [this Craftscript from 2012](https://www.youtube.com/watch?v=Y4M6fsBEk-o) and using FACWE, although the craft script is old and would need updating and I am in single player so FACWE would be undesirable. Also, not regulated by Worldedit.