portfolio - overall improvements for future

Continuing from portfolio - organizing projects

Other improvements that can be made overall, across docs-n-blogs and portfolio

1. add generated index for each tag recursive category, use mdx, docs-n-blog
2. add tags at projects page at https://arkaprav0.in/projects/
3. write some demo projects and then fix the docs-n-blog landing 3rd card
4. make the tags at portfolio site clickable and interactable (use react or solid**)