[#51] Add raw and semantic tokens for typography

[pylapp]

Note: Please transform - [ ] into - (NA) in the description when things are not applicable

Related issues

#51

Description

• Review and update raw tokens for typographty
• Review and update semantic tokens for typography
• Add unit tests for raw tokens for typography (order relationship)
• Add unit tests for semantic tokens for typography (overridings)
• Tackle issue about font families
• Tackle issue about letter spacings
• Check if other issues must be investigated

Motivation & Context

See #51

Types of change

• New feature (non-breaking change which adds functionality)

Previews

Checklist

Contribution

• I have read the contributing guidelines

Accessibility

• (NA) My change follows accessibility good practices

Design

• (NA) My change respects the design guidelines of Orange Unified Design System

Development

• My change follows the developer guide
• I have added unit tests to cover my changes (optional)

Documentation

• My change introduces changes to the documentation and/or I have updated the documentation accordingly

Checklist (for Core Team only)

• The evolution have been tested and the project builds for iPhones and iPads
• Code review has been done by reviewers according to CODEOWNERS file
• (NA) Design review has been done
• (NA) Accessibiltiy review has been done
• (NA) Q/A team has tested the evolution
• Documentation has been updated if relevant
• (NA) Internal files have been updated if relevant (like CONTRIBUTING, DEVELOP, THIRD_PARTY, CONTRIBUTORS, NOTICE)
• CHANGELOG has been updated respecting keep a changelog rules and reference the issues