ci: Add workflow to test installation in GitHub Actions environment
ci: Add workflow to test installation in GitHub Actions environment

This is to debug issues with installation of chromedriver for Windows
in GHA.  It all works correctly on Windows in our test lab, but the
registry path for Chrome may differ in GitHub Actions somehow.

With this workflow, I can experiment in this repo before pushing again
to shaka-player.

shaka-project/webdriver-installer