Revisit ASP.NET Core Integration Test Infrastructure

[hikalkan]

We have a test base class for aspnet core: https://github.com/abpframework/abp/blob/dev/framework/src/Volo.Abp.AspNetCore.TestBase/Volo/Abp/AspNetCore/TestBase/AbpAspNetCoreIntegratedTestBase.cs

However, I see Microsoft made a lot of enhancements and introduces new ways of creating intergated tests. Please check them and try to understand what we can do for a more modern and integrated test experience:

https://learn.microsoft.com/en-us/aspnet/core/test/integration-tests?view=aspnetcore-7.0