Used Minimal APIs builders instead of custom one in Warehouse CQRS sample

[oskardudycz]

Do you know that you can use .NET MinimalAPI methods not only in Program.cs?
Yes, you can! It lets you slice your architecture and put endpoints definitions separately, near the respectful business logic. This matches great with CQRS.

See more in the PR: #144

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This discussion was created from the release Used Minimal APIs builders instead of custom one in Warehouse CQRS sample.