[Feature] Improve JuliaHealth website

[cncastillo]

Based on @Hetarth02's comments:

Upcoming PRs:

High

• Add Packages page
  • Need some help in automating this 🥲
• Add organisations page
  • Need some help in automating this 🥲
• Add connect with us(socials page)
  • Add contribution guide
  • Add proper README.md, CONTRIBUTION.md, etc. docs
• Add meeting notes page

Medium/Low

• Reorganise file structure, small chores etc.
• Add dark mode
• Maybe add custom theme based on this color palette...(https://coolors.co/fefeff-c74042-bc2021-803ba1-b690ca-6cad5f-2a8a14)
• Add CI/CD for auto-build and deployment etc.

Feel free to edit/add the tasks.

Originally posted by @Hetarth02 in #25 (comment)