🏷️ [2203] Add --nl Candidate Paragraph tokens

[jiromaykin]

Summary

utrecht paragraphs will in future all be replaced with the NL Design System Candidate versions, with --nl suffix
https://nldesignsystem.nl/paragraph/

1. here we add the new --nl candidate Paragraph tokens.
2. and we keep Utrecht legacy styling until all can be replaced.
3. but since Utrecht-paragraph--small will become depracated we need a new small font-size in the Common tokens.
4. This PR is the start for https://dimpact.atlassian.net/browse/PP-324

REM font-sizes as advised bij NLDS:

16px → 1rem
20px → 1.25rem
24px → 1.5rem
32px → 2rem
etc...

Also removing pixels/rems from the lineheights:
"...De waarden zijn 'unitless' (zonder eenheid) genoteerd, zodat de regelhoogte automatisch meebeweegt met de gekozen lettergrootte."

Issue References

• GitHub Issue: PP-324 Update Utrecht Paragraphs to NL prefix components and make web-component open-inwoner#2203
• PR in OIP package 🏷️ [#2203] Add NLDS --nl prefix candidate Paragraph as web component open-inwoner#2246

Checklist

• Bumped version number in both package.json and in package-lock.json (can also be done after merge with npm version ...)