Added arrow shooting prevention flag

Add basic flag to prevent entities firing a bow in a certain region. Mostly intended for global configuration to prevent bows in general for two main reasons:

1: Prevent mass build-up of arrows without the need for another plug-in to do so.
2: Prevent people firing bows with special effects (such as TNT from another plug-in) in protected regions.

IntelliJ automatically did some re-factoring to the imports here as-well, not necessary but not harmful either.