Make 'resource' files available to purescript-lib.nix tests

[bladyjoker]

Sometimes the files needed to run the tests are not available to the Nix closure puresscript-lib.nix tests currently run with.

cardax-dex-browser-lib-test-with-node> Error: Cannot find module '../../resources/cardax-dex.json'

How do we deal with this?

• Add resourceDirs parameters and adding this to the Nix closure?
• Actually bundling the whole thing with webpack and running the test on the bundle?