Add timeout support to test_reflective_loader.

To use it, annotate a method with @TestTimeout(t) where t is a const
instance of the Timeout class from the `test` package.  E.g.:

  @TestTimeout(const Timeout.factor(2))
1 file changed
tree: 4959c947bb2d49b37b0b8fc70d34b2715d60ee23
  1. pkgs/