Update env route, add some additional routes to test they are exposing properly

ui/app/api/env/route.ts

@@ -1,6 +1,7 @@
 import process from 'process';
+import { NextResponse } from 'next/server';
 
-async function requestHandler(_request: Request): Response {
+async function requestHandler(_request: Request): NextResponse {
   // Access environment variables
   const envVars = {
     BACKEND_API_URL: process.env.BACKEND_API_URL,
@@ -8,7 +9,7 @@ async function requestHandler(_request: Request): Response {
   }
 
   // Return the environment variables as a JSON response
-  return Response.json(envVars);
+  return NextResponse.json(envVars);
 }
 
 export { requestHandler as GET };

ui/app/api/hello/route.ts

@@ -0,0 +1,7 @@
+import { NextResponse } from 'next/server';
+
+async function requestHandler(_request: Request): NextResponse {
+  return NextResponse.json({ 'response': 'Hello World' });
+}
+
+export { requestHandler as GET };

ui/app/api/time/route.ts

@@ -0,0 +1,7 @@
+import { NextResponse } from 'next/server';
+
+async function requestHandler(_request: Request): NextResponse {
+  return NextResponse.json({ 'time': Date.now() });
+}
+
+export { requestHandler as GET };