add web ui and user route

web/src/api/user.ts

@@ -0,0 +1,19 @@
+import { useQuery } from "@tanstack/react-query";
+
+export type User = {
+  id: number;
+  login: string;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt: string | null;
+};
+
+export const useUserQuery = () => {
+  return useQuery({
+    queryKey: ["user"],
+    queryFn: async () => {
+      const resp = await fetch("/api/user");
+      return (await resp.json()) as User;
+    },
+  });
+};