Implement automated build for automatic releasing

[DanielTamkin]

Origin

When attempting to use this action elsewhere, i realized my testcases were faulty; resulting in this action never actually working until the latest release of v1.0.4 where the build is directly accessible.

The fix

As a quick fix, I've directly included the build into the repo. This is not great, I'd rather the build only be distributed with each release. Will explore options. Additionally, implementing this hot-fix included an enviroment shift to running under straight nodejs12, instead of a docker container; shaving off nearly 20s of run-time(since no container was spun up).

Resources

• The recommended compiler, ncc
• GitHub's recommended way to develop actions