feat: nav component

[wesleyboar]

Overview / Changes

Add nav component.

Related

• ECEP-114
• required by ECEP-114: Members Page (Nav Pattern, Typography, Sticky Position) Core-CMS#464
• required by [another ECEP-114 PR yet to be made]

Testing / Screenshots

1. Review Core Nav Pattern (dev).
2. Change screen size from wide to narrow and back.
3. On wide screen:
   • links should have less space between them.
   • link vertical clickable area should extend a tad beyond its text
   • link horizontal clickable area should extend a tad beyond its text
4. On narrow screen:
   • links should have more space between them
   • link vertical clickable area should extend well beyond its text
   • link horizontal clickable area should extend a tad beyond its text
5. Previous features must not have changed:
   • boxed unordered list item have bullets prefixes
   • ordered list items have numerical prefixes
   • no list links line up on a row and wrap

_{* If you want to test locally, then create these snippets (click to reveal):}

HTML: "(basic)"
TEMPLATE: snippets/manual-pattern-library/c-nav.html

HTML: c-nav--boxed
TEMPLATE: snippets/manual-pattern-library/c-nav.html