feat: ⚡️ Add docs and connect Stripe

apps/builder/package.json

@@ -44,6 +44,7 @@
     "deep-object-diff": "^1.1.7",
     "fast-equals": "^2.0.4",
     "focus-visible": "^5.2.0",
+    "form-data": "^4.0.0",
     "framer-motion": "^4",
     "google-auth-library": "^7.11.0",
     "google-spreadsheet": "^3.2.0",
@@ -52,6 +53,7 @@
     "immer": "^9.0.12",
     "js-video-url-parser": "^0.5.1",
     "kbar": "^0.1.0-beta.24",
+    "mailgun.js": "^4.2.1",
     "micro": "^9.3.4",
     "micro-cors": "^0.1.1",
     "models": "*",