make: add a target for building pyoxidizer tests on macOS
The resources seem to be embedded inside the binary, but for some reasons they
aren't read there. And since they are embedded, they aren't staged by the build
in the `lib` directory like on Windows. So copy them from the repo. We can
figure out what's going wrong later.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
end_of_line = lf
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
end_of_line = lf
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false
end_of_line = lf