Improve integration test suite CI run script
Created by: eseliger
The final result in the CI logs
Otherwise this PR does the following improvements:
- Fixes the CSS modules types generator when run outside of the repo root (
client/web
, for example) - Fixes a deprecation in the Webpack dev server, which I saw along the way
- Adds the CSS generator to the set of generators run for build-web. They were missing there
- Share the set of generators to run for build-web, so this issue doesn't arise again
- Switch to a different run script where
yarn generate
isn't run twice - The above grouping of log outputs into "steps"