Auto-generate type models for Ruby

[koesie10]

This will auto-generate type models for Ruby on start-up. I've made it generic so it can be extended to other languages, like most other MaD configuration.

Progress is shown in the window location:

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[robertbrignull]

I've only read through the code and haven't tried running it, but it all looks good to me.