Update the MauiBlazorWebIdentity sample to .NET 10

[mattleibow]

Describe the issue

The sample is outdated and needs to be updated to .NET 10 AND to use the new features/conventions of .NET 10.

To Reproduce

1. Look at the sample
2. Weep as it is not .NET 10

Expected behavior

The sample is up to date.

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Issue Details

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• Content Source: dotnet/blazor-samples
• GitHub Login: @guardrex

[guardrex]

Thanks ... this is all we need for tracking (AFAIK ... I'm not really sure if anyone at MS ever looks or compiles stats on these).

[Andriko1]

Will this template be included in Visual Studio in the future? Also are there any plans to add a .Web.Client project?

[dojademake]

Have a pretty good start on it here: https://github.com/dojademake/MauiBlazorWebIdentity/tree/develop