Update Norwegian Unicode rules for expanded character support and consistency

- Added unicode characters.
- Updated `spell` to `SPELL`.
- Implement `:literal:` intent logic for double exclamation (‼) and fraction slash (⁄).
- Add verbosity-based logic for the cross product symbol (⨯).
- Add support for MathJax PUA values used for chemical bonds and arrows.

Author: MartheGjelstad