Micro Modules

CoreModule has a large number of services. Each service handles a general concern, like "notifications", but increasing this granularity a little put more could allow a lot more code re-use.

One specific example that comes to mind is services that provide CRUD operations for a database table. The EntityStoreService can be used for a lot of these even though right now it's specifically used for drivers. Having a common class of service like this can also allow quickly configuring the equivalent service for providing those CRUD operations through an API.