Update invoice sending to directly use webhook URL and add timeout

Replaced the backend proxy route for sending invoices with a direct fetch to the webhook URL, incorporating a 60-second timeout using AbortController. Also added 'busboy' and '@types/busboy' to package.json.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 1e4433b5-47ab-464c-b663-fea2e53367dd
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: ca0ae43e-5b56-4b02-8cb5-0e76adf608ba
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/1e4433b5-47ab-464c-b663-fea2e53367dd/qOJ89TE

package-lock.json

@@ -41,12 +41,14 @@
         "@radix-ui/react-tooltip": "^1.2.0",
         "@tanstack/react-query": "^5.60.5",
         "@types/bcrypt": "^6.0.0",
+        "@types/busboy": "^1.5.4",
         "@types/form-data": "^2.2.1",
         "@types/memoizee": "^0.4.12",
         "@types/multer": "^2.0.0",
         "@types/node-fetch": "^2.6.13",
         "@types/pg": "^8.15.4",
         "bcrypt": "^6.0.0",
+        "busboy": "^1.6.0",
         "caniuse-lite": "^1.0.30001727",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
@@ -3625,6 +3627,15 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/busboy": {
+      "version": "1.5.4",
+      "resolved": "https://registry.npmjs.org/@types/busboy/-/busboy-1.5.4.tgz",
+      "integrity": "sha512-kG7WrUuAKK0NoyxfQHsVE6j1m01s6kMma64E+OZenQABMQyTJop1DumUWcLwAQ2JzpefU7PDYoRDKl8uZosFjw==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/connect": {
       "version": "3.4.38",
       "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.38.tgz",