Make Database facade use more consistent across data stores

This is part of Issue #641 which is about cleaning up the use of DbContextConfiguration. DbContextConfiguration is intended to help resolve dynamic services--that is, services for which the actual type/instance of service to use depends on the current context configuration. However, it has gradually spread throughout the code as a general purpose service locator. This causes dependencies to be hidden and creates a lot of coupling to DbContextConfiguration throughout the code, so I am making a set of changes to help fix this.

There are two main reasons for this change:
- Ensure that the correct provider-specific Database facade is always used even when multiple providers have registered services
- Change the way the ApplyMigrations method is implemented such that, in an upcoming change, it can be decoupled from direct use of DbContextConfiguration.
Remove incomplete UseXxx service methods

These were intended as a form of sugar for replacing services. However, they have not been updated with new services, are used inconsistently, and don't seem to provide real value over just using the normal DI methods. We already know that we need to consider the common extensibility story with some form of sugar, but I don't think this is it, so cleaning this out for now.
Make Database not depend on DbContextConfiguration

This is part of Issue #641 which is about cleaning up the use of DbContextConfiguration. DbContextConfiguration is intended to help resolve dynamic services--that is, services for which the actual type/instance of service to use depends on the current context configuration. However, it has gradually spread throughout the code as a general purpose service locator. This causes dependencies to be hidden and creates a lot of coupling to DbContextConfiguration throughout the code, so I am making a set of changes to help fix this.

This change introduces the idea of registering delegates for dynamic services using the mechanism added recently to the DI abstraction. This allows dynamic services to be depended on in constructors in the normal way. However, since these dynamic services can result in work being done to initialize and build the service the delegates are generally registered to create LazyRef<TService> and so this should be depended on. This allows, for example Database to depend on the current model by depending on LazyRef<IModel> but the model will only be built if the database actually makes use of it.
Make DataStoreConnection not depend on DbContextConfiguration

This is part of Issue #641 which is about cleaning up the use of DbContextConfiguration. DbContextConfiguration is intended to help resolve dynamic services--that is, services for which the actual type/instance of service to use depends on the current context configuration. However, it has gradually spread throughout the code as a general purpose service locator. This causes dependencies to be hidden and creates a lot of coupling to DbContextConfiguration throughout the code, so I am making a set of changes to help fix this.

The main change here is to get the current options by depending on LazyRef<DbContextOptions>. I also needed to update the Redis provider to not depend on scoped services in singleton services.
Merge branch 'Connection1106' into dev