added backend to cache manga updates requests

backend/src/router/AniListRouter.ts

@@ -0,0 +1,24 @@
+import {NextFunction, Request, Response, Router} from 'express';
+
+export default function aniListRouter(): Router {
+  const router = Router();
+  router.post('/graphql', async (req: Request, res: Response, next: NextFunction) => {
+    try {
+      const fromApi = await fetch('https://graphql.anilist.co/graphql', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(req.body),
+      });
+
+      const fromApiText = await fromApi.text()
+      res.status(fromApi.status).send(fromApiText);
+    } catch (e) {
+      console.error(e);
+    }
+    next();
+  });
+
+  return router;
+}