feat: Implement Inventory Management Commands and Queries

- Added CreateWarehouseCommand and CreateWarehouseCommandHandler for warehouse creation.
- Introduced RecordLossCommand and RecordLossCommandHandler to handle stock loss recording.
- Created UpdateInventorySettingsCommand and its handler for updating inventory settings.
- Implemented GetAllInventoryItemsQuery and its handler to retrieve inventory items with pagination.
- Added GetAllWarehousesQuery and handler for fetching all warehouses.
- Developed GetLowStockItemsQuery and handler to get items below a specified stock threshold.
- Implemented GetStockMovementsQuery and handler for retrieving stock movement records.
- Created mappings for inventory-related requests and responses in InventoryProfile.
- Developed InventoryService to handle gRPC requests for inventory operations.
- Added Protobuf definitions for inventory management services and messages.

src/BackOffice.BFF.Infrastructure/Services/ApplicationContractContext.cs

@@ -25,6 +25,7 @@ using CMSMicroservice.Protobuf.Protos.DiscountOrder;
 using CMSMicroservice.Protobuf.Protos.ManualPayment;
 using CMSMicroservice.Protobuf.Protos.NetworkMembership;
 using CMSMicroservice.Protobuf.Protos.AppVersion;
+using CMSMicroservice.Protobuf.Protos.Inventory;
 
 // BFF Protobuf contracts
 
@@ -97,5 +98,8 @@ public class ApplicationContractContext : IApplicationContractContext
     
     // App Version Management
     public AppVersionContract.AppVersionContractClient AppVersions => GetService<AppVersionContract.AppVersionContractClient>();
+    
+    // Inventory Management System
+    public InventoryContract.InventoryContractClient Inventory => GetService<InventoryContract.InventoryContractClient>();
     #endregion
 }