Mitigate AddProvider verse AddEntityFrameworkProvider method confusion

[ajcvickers]

By hiding the infrastructure method from Intellisense and adding docs.

Also adds Cosmos and In-Memory sugar.

Part of #24743

[ajcvickers]

/cc @DamianEdwards @davidfowl

[DamianEdwards]

oooo I like how this reads 😃

[roji]

We could also have the analyzer flag usages of AddEntityFrameworkProvider - opened #25455 to track this.

[ajcvickers]

Note from triage: remove AddInMemoryDatabase because we want to direct people away from the in-memory database.

[DamianEdwards]

@ajcvickers that's a shame as the in-memory database can be a good candidate during tutorials when the complexity of initializing and managing a storage provider adds more complexity/concepts to the learning stage than is desired. In-memory being self-initializing and requiring no separate acquisition or setup is appealing in these scenarios.

@davidfowl @LadyNaggaga

[davidfowl]

Note from triage: remove AddInMemoryDatabase because we want to direct people away from the in-memory database.

Why would we remove this? It's so simple to get started and avoids the need for migrations until required.

[AndriySvyryd]

Why would we remove this? It's so simple to get started and avoids the need for migrations until required.

Because it's not a real database. A lot of users expect it to have relational semantics or being production-ready. InMemoryDatabase has a very limited scope and we should steer them towards SqlServer LocalDB or Sqlite in-memory.

Microsoft has been criticized for building toy apps in tutorials using techniques that aren't acceptable in production-ready code, InMemoryDatabase certainly falls into this category.

[davidfowl]

It's already in another package you have to explicitly reference. Not adding this method doesn't do anything. I think we should add the method.

You can continue to push people to SQLite but don't neuter the package arbitrarily

[ajcvickers]

Split out the in-memory question to #25487 so that the rest can be merged. We can continue discussion there.