feat: add truncateByWords lib

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What does this PR do?

🤖 Generated by Copilot at dd23d71

This pull request adds a truncateByWords function to the lib folder and uses it to shorten the texts for the profile, publication, and shared components in the prerender app. This improves the SEO, user interface, and performance of the prerendered pages.

Related issues

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking small changes to existing functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Explanation of the changes

🤖 Generated by Copilot at dd23d71

• Add truncateByWords function to lib folder to shorten texts by words (link)
• Import and apply truncateByWords function to profile bio and description for meta tags and page display in Profile.tsx (link, link, link)
• Import and apply truncateByWords function to publication content for meta tags in Publication.tsx (link, link)
• Import and apply truncateByWords function to publication content for shared component in SinglePublication.tsx (link, link, link)
• Reduce the limit of comments fetched for publication page from 50 to 30 in posts/[id].tsx to improve prerendering performance (link)
• Reduce the limit of publications fetched for profile page from 50 to 30 in u/[handle].tsx to improve prerendering performance (link)

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Name	Status	Preview	Updated (UTC)
prerender	✅ Ready (Inspect)	Visit Preview	Apr 8, 2023 1:30pm
web	✅ Ready (Inspect)	Visit Preview	Apr 8, 2023 1:30pm