add section for development docs

[ES-Alexander]

• Can take inspiration from the BlueOS development docs
• Should cover things like:
  • Tech stack
    • Tailwind, vite, bun, Docker, TypeScript, Vuetify, etc.
    • Browser-based vs standalone application
    • .devcontainer
    • Repo structure
    • Deployment workflow
  • How to contribute (code, docs, ideas), and restrictions on doing so (license(s), contributor covenant)
  • Communication channel(s)
  • usage: advanced: cover how to run backend providers locally #1