Allows usage of Web SDK when updating project files

[svengeance]

This addresses a use-case I missed in the previous feature. Ironically enough I was motivated to contribute here specifically to have Azure CI builds use GitVersion to update my web project, and I missed it. Meh.

Description

Allows project file updating for Web SDK Projects

Related Issue

Fixes #2290

Motivation and Context

I'd like to update my ASP.NET Core projects.

How Has This Been Tested?

Added a test to ensure the Microsoft.NET.Sdk.Web was an allowed SDK

Screenshots (if appropriate):

None. But you may have a picture of another one of my cats.

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[asbjornu]

Thanks for the lovely cat picture! And also for your code contributions, but mostly for the picture of your cat. 😸 🙏