Add handling for setBlocks calls that use block sets and generic BlockStateHolder patterns. Imported java.util.Set and added an override for the generic <B extends BlockStateHolder<B>> setBlocks to delegate to the Pattern variant, plus a new setBlocks(Set<BlockVector3>, Pattern) override that checks the WORLDEDIT config, processes each target position to record previous block state and container contents (unless FAWE), and posts WorldEditLogger events before delegating to eventExtent. Includes a new helper processPatternToBlocks and documents limitations around reading container/NBT data from the WorldEdit API.
