Add new test templates to "dotnet9Templates"

[Vishwanatha-HD]

Hi @omajid,
To take care of the failing "template-test" testcase, I have added the new test templates as part of "dotnet9Templates".
Please have a review of the changes and merge it if they are fine.. thanks..

[omajid]

Thanks!

[omajid]

How did you test this? I am trying it now and it doesn't work:

Failed to instatiate template 'MSTest Test Class', the following constraints are not met:
   Project capabiltities: No project was found at the path: /var/tmp/tmp.i0wbFDwrMq/mstest-class_template. This template can only be created inside the project.

To run the template anyway, use '--force' option:
   dotnet new mstest-class --force

For details on the exit code, refer to https://aka.ms/templating-exit-codes#100

cc @Swapnali911

[omajid]

I have created #356

[omajid]

After sleeping on this, I don't think we should list playwright templates in our list: #357