Added a ResourceDeleting event handler on FileManager.

This is useful for plugins that need to take some action based on a resource being
deleted before all of the useful information like SourcePath is removed.
Added the ability to exclude certain assemblies from type and member searches.

This is a performance enhancement in cases where a plugin might have a large
assembly that will never be referenced from the game, but slows down type
searches nonetheless.
Change the platform target so that the game runs on steam
Updating dependecy AdamsLair Winforms