GitLab

* Remove comment and whitespace from before_script var stuff

* Move config opts to end

* Different debug

(still needs more work)

Bug: T297991

* Remove version-based directory structure
* Add single, per-tool ci template files, based upon configurable
  docker-registry.wikimedia.org images (via new env var)
* Update ci templates to support multiple, nested package/-lock.json files
* Add support for configurable tool options (via new env var)
* Other misc. cleanup

* Re-work logic for npm audit options variable checks