feat: add healthcheck endpoint

issue: #421, issue: #419

src/pages/healthcheck.tsx

@@ -0,0 +1,12 @@
+import Elysia from "elysia";
+import { userService } from "./user";
+
+export const chooseConverter = new Elysia().use(userService).get(
+  "/healthcheck",
+  () => {
+    return { status: "ok" };
+  },
+  {
+    auth: false,
+  },
+);