docs & blog - further improvements for later

1. add more social links ✅ 2024-07-27
2. plan out and read more about blogs
3. write some blogs at least
4. remove test blogs
5. Add mail - contact me in more ✅ 2024-07-29
6. change the sub heading and heading colours for blog-note landing page 🔺 ✅ 2024-07-28
7. Add sidebar navigators (docs sidebar generated index)
8. markdown mode md to detect to use mdx features ✅ 2024-07-29

Continued from docs & blog - immediate improvements can be made and docs & blog - Docusaurus setup - initial finalization