Fix memory leak issue by adding fetch request timeout

This commit resolves a memory leak issue that was occurring due to fetch requests hanging indefinitely. A timeout has been introduced to the `requestOpenai` function which ensures that these requests are aborted after a set period of time (currently 10 minutes). Additionally, error handling has been added to catch and log `AbortError` when a fetch request is aborted. This fix significantly improves the stability and reliability of the application by preventing memory leaks related to unresolved fetch requests.

app/api/common.ts

@@ -1,6 +1,6 @@
 import { NextRequest } from "next/server";
 
-const OPENAI_URL = "api.askgptai.tech";
+const OPENAI_URL = "api.openai.com";
 const DEFAULT_PROTOCOL = "https";
 const PROTOCOL = process.env.PROTOCOL ?? DEFAULT_PROTOCOL;
 const BASE_URL = process.env.BASE_URL ?? OPENAI_URL;
@@ -10,7 +10,7 @@ export async function requestOpenai(req: NextRequest) {
   const authValue = req.headers.get("Authorization") ?? "";
   const openaiPath = `${req.nextUrl.pathname}${req.nextUrl.search}`.replaceAll(
     "/api/openai/",
-    ""
+    "",
   );
 
   let baseUrl = BASE_URL;