Implement new configuration mechanism

[rpanic]

Implement new configuration mechanism for starter-kit as per the spec:

Configuration can be passed by
- Environment Variables and using process.env.NAME directly in the starter-kit environment's ts file
- Directly passed as ts

Specific thing to test for (that hasn't worked in the past). Launching with caddy on our devnet.protokit.dev server to make sure the reverse proxy can proxy to all backend services correctly