Add soft assertions to new assertions

[nohwnd]

Checklist

• [X] Feature request has a meaningful title
• [X] I have searched the existing issues. See all issues
• [X] I have tested using the latest version of Pester. See Installation and update guide.

Summary of the feature request

I made a shortcut and made all the assertions output terminating error (it is set when you create exception via the helper). But they should support the same soft assertions as Should.

How should it work?

No response