Stylelint is a css linter: https://stylelint.io/
As part of this change we have added two javascript scripts:
```
pnpm lint:css
pnpm lint:css:fix
```
Look at `.vscode/settings.json.sample` and `.vscode/extensions.json` for
configuration in VSCode.
---------
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
This PR involves cleaning up the codebase from my (@keegangeorge's) todos.
In particular:
- Remove Form Template related todos (these are no longer in the roadmap)
- Remove old left-over AI summarization related code after moving to AI (https://github.com/discourse/discourse-ai/pull/658)
- Update one form template related spec
