Add test for imported getters and setters

[RunDevelopment]

This PR just adds tests for imported getters and setters. It shows bugs that I want to fix.

1. Renaming for static getters and setters does not work correctly. See that the setter is always called set_<name>.
2. Static getters ignore the name set in the getter attribute. Same for setters.
3. The code gen for static getters/setters is not correct. Note that they are called as functions.

I already have a fix ready for 1 and 2, but I wanted to add the tests before that PR, so that it's easier to see how the fix PR changes the existing code gen.

[daxpedda]

This is awful ...
Thank you for doing this!