chore: import upstream snapshot with attribution

apps/webapp/app/routes/api.v1.mock.ts

@@ -0,0 +1,20 @@
+import type { ActionFunctionArgs } from "@remix-run/server-runtime";
+
+export async function action({ request }: ActionFunctionArgs) {
+  if (process.env.NODE_ENV === "production") {
+    return new Response("Not found", { status: 404 });
+  }
+
+  return new Response(
+    JSON.stringify({
+      data: {
+        id: "123",
+        type: "mock",
+        attributes: {
+          name: "Mock",
+        },
+      },
+    }),
+    { status: 200 }
+  );
+}