[Feature request] Extend `@Test` and `#expect` to work with snapshot testing in SwiftTesting

[mapierce]

Would be really nice to be able to use @Test and #expect in snapshot testing. Particularly @Test for passing in different arguments.

[alanzeino]

I think this would be a better feature request for pointfree's library, since they are a pure Swift framework.

ios-snapshot-test-case is (mostly at this point) a legacy framework for older Objective-C test targets.