feature: introduce ISR in home page

[devsargam]

All the contents in projects.100xdevs.com are loaded with SSG currently

Which means the content is not revalidated whenever admin adds new additional content.

Ideally, we would like to cache the page unless a certain tag is invalidated which should happen when admin add a new track which will refresh all the tracks

ref: https://nextjs.org/docs/app/building-your-application/data-fetching/incremental-static-regeneration