Update Templates and Dev Apps w/new API for 0.3.0-preview

[jennyf19]

https://github.com/Azure-Samples/active-directory-dotnet-native-aspnetcore-v2
https://github.com/Azure-Samples/active-directory-dotnetcore-daemon-v2
https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2

• Web app MVC
• Web app Razor
• Web app Blazor server
• Blazor web assembly
• Web API

Can MS identity web be referenced w/ *? so the templates will use whichever is latest version.

[pmaytak]

Side note: Version="*" gets the latest stable version. Version="*-*" gets the latest version including pre-release.
Reference

[jmprieur]

The samples are, for the moment, using .NET Core 3.1, and I would not recommend moving them to 5.0 until it's RC or GA as this would add a tax to customers.

[jmprieur]

Proposal for templates update in #397, part of 83a2921

[jennyf19]

Included in 0.3.0-preview release.