UHF-11934 Theme builder for subtheme

[khalima]

UHF-11934

What was done

• Removed webpack and postcss related configurations.
• Added theme builder configurations file.
• Use correct path for breakpoint-sass.
• Updated the package.json to support @hdbt/theme-builder.
• Downgrade node version to 22, to support hds-core and hds-react 4.6.0

How to install

• Make sure your instance is up and running on correct branch.
  • git checkout UHF-11934
  • make fresh
• Run make drush-cr

How to test

• Go to /public/themes/custom/hdbt_subtheme/ and run nvm use; npm i; npm run build. The outcome should be something like this:

🧹 Cleaning dist...
⏱️ JS built in 31ms
🎨 Building CSS…
⏳ CSS [████████████████████████████████████████] 100% | 1/1 files
⏱️ CSS built in 125ms
⏱️ Everything built in 158ms

• Check that code follows our standards

Other PRs

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[khalima]

Used wrong ticket number, closing in favour of #329