[WIP] One index

[MKaHead]

• Export one index import { createAXAButtonReact } from '@axa-ch/button'; import AXAButton from '@axa-ch/button';
• Remove Dist build and all hack scripts
• Type module
• Rollup 3
• Only one rollup file

Merge Checklist:

• [ ] Code selfreview has been performed (Best Practices).
• [ ] Tests are sufficient.
• [ ] Documentation is up to date.
• [ ] Changelog is up to date.
• [ ] Typescript typings for properties are up to date.
• [ ] Designers approved changes or no approval needed.
• [ ] Dependencies to other components still work.