✨ feat(order): add customer email and optional fields, update order creation flow

- Added `customerEmail` field to Order model.
- Made `customerNote` optional in the Order model.
- Updated order creation logic to send a tracking email.
- Updated order validation to handle optional fields.
- Refactored configurations import path from `errors/configs` to `configs`.
- Minor modifications across account and order services for consistency.

src/app/configs/index.ts

@@ -0,0 +1,26 @@
+import "dotenv/config";
+
+export const configs = {
+  port: process.env.PORT,
+  env: process.env.NODE_ENV,
+  db_url: process.env.DATABASE_URL,
+  jwt: {
+    access_token: process.env.ACCESS_TOKEN,
+    refresh_token: process.env.REFRESH_TOKEN,
+    access_expires: process.env.ACCESS_EXPIRES,
+    refresh_expires: process.env.REFRESH_EXPIRES,
+    reset_secret: process.env.RESET_SECRET,
+    reset_expires: process.env.RESET_EXPIRES,
+    front_end_url: process.env.FRONT_END_URL,
+    verified_token: process.env.VERIFIED_TOKEN,
+  },
+  email: {
+    app_email: process.env.APP_USER_EMAIL,
+    app_password: process.env.APP_PASSWORD,
+  },
+  cloudinary: {
+    cloud_name: process.env.CLOUD_NAME,
+    cloud_api_key: process.env.CLOUD_API_KEY,
+    cloud_api_secret: process.env.CLOUD_API_SECRET,
+  },
+};