feat: implement business pricing service and money utilities

- Added `businessPricing.service.js` to handle business customer pricing logic.
- Introduced `money.js` for money parsing, formatting, and calculations.
- Created `pricing.service.js` to manage variant quoting and promotion application.
- Updated validation schemas in `catalogue.schemas.js` and `inventoryMerchandising.schemas.js` for new pricing and inventory features.
- Implemented cron job for inventory reservation expiry in `inventoryReservationExpiry.cron.js`.
- Created database migrations for catalogue and inventory structures.
- Added unit tests for catalogue localization, validation, and inventory merchandising functionalities.

app/models/user/businessCustomer.model.js

@@ -55,6 +55,7 @@ module.exports = (sequelize, DataTypes) => {
       approvedAt: { type: DataTypes.DATE, allowNull: false },
       approvedBy: { type: DataTypes.STRING, allowNull: false },
       settlement_term_id: { type: DataTypes.STRING, allowNull: true },
+      business_tier_id: { type: DataTypes.STRING, allowNull: true },
     },
     {
       tableName: "business_customers",
@@ -71,6 +72,7 @@ module.exports = (sequelize, DataTypes) => {
     BusinessCustomer.hasMany(db.Address, { foreignKey: "business_profile_id", as: "addresses" });
     BusinessCustomer.hasOne(db.BusinessCreditAccount, { foreignKey: "business_profile_id", as: "creditAccount" });
     BusinessCustomer.belongsTo(db.SettlementTerm, { foreignKey: "settlement_term_id", as: "settlementTerm" });
+    BusinessCustomer.belongsTo(db.BusinessTier, { foreignKey: "business_tier_id", as: "businessTier" });
   };
 
   return BusinessCustomer;