feat: add health check

Summary:

Test Plan:

src/index.ts

@@ -1,9 +1,21 @@
-import { Hono } from "hono";
+import { OpenAPIHono } from "@hono/zod-openapi";
 
-const app = new Hono();
+const app = new OpenAPIHono();
 
-app.get("/", (c) => {
-  return c.text("Hello Hono!");
+app.route(
+  "/",
+  await import("~/controllers/health-check").then(
+    (controller) => controller.default,
+  ),
+);
+
+// The OpenAPI documentation will be available at /doc
+app.doc("/doc", {
+  openapi: "3.0.0",
+  info: {
+    version: "1.0.0",
+    title: "Aniplay API",
+  },
 });
 
 export default app;