This commit introduces a using directive for `System.Reflection` in `DbRepositoryTests.cs` to support reflection features. The `Setup` method is updated to include `AddAutoMapper`, ensuring AutoMapper services are registered for dependency injection in the test environment.
Modified `AddDbRepository` method to allow broader entity types and registered `queryFactory` as a singleton. Added necessary using directives in `DbRepositoryTests.cs` and updated the `Setup` method to configure an in-memory database for testing with `MockDbContext` and `User` entity.
Updated `DigitalData.Core.Tests.csproj` to include conditional
package references for Entity Framework Core and its InMemory
provider for net7.0, net8.0, and net9.0.
Added `DbRepositoryTests` class with setup and teardown
methods for managing the lifecycle of a host instance.