New post-test runner process created

[neenjaw]

• old js based test runner not able to parse doc-blocks, using reflection can parse doc blocks
• reduce complexity by introducing a complicated docker process and another language

need to add:

• ~new workflow, just gotta figure out the best way to pull in composer, cache dependencies~ (done)
• ~add test code~ (done)
• ~bump version of test runner~ (done)