Config: JSON Generated Schema & Singleton

[RXminuS]

WIP: A proposal to make some DX changes to the config

PoC

• Use literal strings for getting config values.
  • Much easier to search / grep
  • 1-on-1 relation between package.json & code
• Use zod schema validation
  • generated from source of truth...JSON Schema
  • config is always valid
  • gracefully handle migrations, deprecations and fallbacks
• Place env variables in single point.
  • all configuration in a single inspectable object
  • derived flags can be computed values
  • validation

Open Questions

• Move to singleton config object?
  • Live in shared lib?
  • Some have injected config / some look up in workspace etc.
  • How to handle listeners

Test plan

CI