Documentation and samples of Aspire + EF Core tooling

[JamesNK]

Follow on from dotnet/aspire#398

There is an EF migrations playground app that can be used as a starting place for samples.

• Sample - done here https://learn.microsoft.com/en-us/samples/dotnet/aspire-samples/aspire-efcore-migrations/
• Documentation

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Associated WorkItem - 232757

[eerhardt]

What kind of documentation are we thinking of here? If we want something on learn.microsoft.com, I think logging an issue in https://github.com/dotnet/docs-aspire is the right way.

cc @IEvangelist

[davidfowl]

Assign to you @JamesNK. Move or close if no longer relevant or if the issue has been moved to docs.

[JamesNK]

Documentation shouldn't be difficult to write. Can look to sample to see code required for various tasks, and steps required to generate and apply migrations.