Update tutorial samples

[eslam-fakhry]

Fixes #13232
Update "Add, download, and delete custom user data to Identity in an ASP.NET Core project" tutorial to use dotnet3.0

[EDIT by guardrex to add the internal review link]

Internal Review Link

[Rick-Anderson]

@eslam-fakhry unfortunately we can't remove any prior versions. We usually do the following to add a new version

::: moniker range=">= aspnetcore-3.0"
// copy 2.2 version here, then update
::: moniker-end

::: moniker range="< aspnetcore-3.0"
previous version
::: moniker-end

[eslam-fakhry]

@Rick-Anderson Updated the pull request

[guardrex]

Nice one @eslam-fakhry! 🎸 We all thank you for helping.

You may already know this: If you flip this over to the diff, you can add all of my suggestions to one batch and then commit the single batch of changes all at once.

[Rick-Anderson]

@eslam-fakhry can you fix the merge conflicts in aspnetcore/security/authentication/add-user-data/sample-2.2/Areas/Identity/Pages/Account/Manage/Index.cshtml ?

[guardrex]

Thanks for doing all of this work 😅. I'll note this PR on the tracking issue at #5495.

[guardrex]

I'll go ahead and sign-off. Some of the lines might be too long if those lines are used in the topic ... the long ones might just be code that isn't shown tho.

I'll add the internal tracking link to your opening comment. That will indicate if there are any horizontal scrollbars.

Thanks again for all of your hard work on this. I realize it's a lot, but this topic+sample will be easy to work with now (e.g., 3.1 ... coming soon!) ... thanks to YOU! 🎸

[Rick-Anderson]

Lines look good. Thanks @eslam-fakhry