feat(server): add raw body parsing for multipart/form-data and application/octet-stream

- Implemented a new middleware to handle raw body parsing for specific content types, allowing for larger payloads up to 5mb.
- Enhanced form body serialization to support Buffer input, improving compatibility with various data formats during proxy interactions.

backend/server.js

@@ -75,6 +75,11 @@ app.use(cors({
   allowedHeaders: ['Content-Type', 'Authorization', 'authcode', 'userid']
 }));
 
+app.use('/api/clicktt/proxy', express.raw({
+  type: ['multipart/form-data', 'application/octet-stream'],
+  limit: '5mb',
+  verify: captureRawBody,
+}));
 app.use(express.json({ verify: captureRawBody }));
 app.use(express.urlencoded({ extended: true, verify: captureRawBody }));