Removed the API route in favour of server side rendering; Updated documentation to list environment variables (#9)

- Use server side rendering in the `getServerEnv` library function, rather than using the API route
- Updated `README.md` to list the relevant environment variables for the frontend and backend
- Updated `NETWORKING.md` to reflect the changes made in `docker-compose.yaml`

ui/app/api/env/route.ts

@@ -1,16 +0,0 @@
-import process from 'process';
-import { NextResponse } from 'next/server';
-
-// Enable the Runtime
-export const runtime = "edge"
-
-export async function GET(_request: Request) {
-  // Access environment variables
-  const envVars = {
-    'BACKEND_API_URL': process.env.BACKEND_API_URL ?? process.env.NEXT_PUBLIC_API_URL,
-    'BACKEND_WS_URL': process.env.BACKEND_WS_URL ?? process.env.NEXT_PUBLIC_WS_URL
-  }
-
-  // Return the environment variables as a JSON response
-  return NextResponse.json(envVars);
-}