Currently we have sparse documentation about nuxt/components. Since this is an ad-hoc module (built-in feature with independent versioning) i think it would be the best to move and link docs from repo to official website so is easier for users to find all information in single place and avoid content to be stalled.

Goals:

• Adding "Features > Components Discovery" section
• Renaming "Features > Nuxt Components" to "Features > Components" (or built-in components?)
• Update "Directory Structure > Components" with components v2 docs (to be released)
• Update "Configuration Glossary > components" with detailed version of options (moving from repo)
• [q] Where to put advanced docs about extending components with hooks (module authors) and diagram? We may add it under features?
• Apply and mention conventions based on vue-style-guide (for base components, naming, etc)

Related PR: #1363 (not fully covering this issue atm)