Migrate the existing checker / suggester code to instead use the new validator framework. We need to add,
- A validator to replicate - wikiParameterCheck. We can add a custom validator and use that instead of defining a regex everytime. Insertable with a warning.
- A validator to replicate the old - NumericalParameterInsertablesSuggester - Regex: /\$\d+/. Insertable with a warning.
We'll need to update the YAML configuration file located here - https://phabricator.wikimedia.org/diffusion/GTWN/browse/master/groups/
Documentation: https://www.mediawiki.org/wiki/Help:Extension:Translate/Validators
Example patch: https://gerrit.wikimedia.org/r/c/translatewiki/+/549930