Update owner scope for tool menus

[reapazor]

https://zomgmoz.tv/unreal/Editor-customization/UToolMenu-best-practices

[reapazor]

It looks like the desired implementation is to have command stuff on the module itself (to be a uobject), that way it can scope around it. Probably can move most stuff back AFAIK, but will investigate.

[reapazor]

This changes alot fo how our menus works, we currently manage the ownership and scope so its not entirely needed. Going to punt this to 0.3.0 to focus on documentation.