Add Next.js frontends with health endpoints

apps/prism-console/app/health/route.ts

@@ -0,0 +1,8 @@
+import { NextResponse } from "next/server";
+
+export async function GET() {
+  return NextResponse.json({
+    service: "blackroad-os-prism-console",
+    status: "ok"
+  });
+}