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.Application/InventoryCQ/Queries/GetLowStockItems/GetLowStockItemsQueryHandler.cs

@@ -0,0 +1,50 @@
+using CMSMicroservice.Protobuf.Protos.Inventory;
+
+namespace BackOffice.BFF.Application.InventoryCQ.Queries.GetLowStockItems;
+
+public class GetLowStockItemsQueryHandler : IRequestHandler<GetLowStockItemsQuery, GetLowStockItemsResponseDto>
+{
+    private readonly IApplicationContractContext _context;
+
+    public GetLowStockItemsQueryHandler(IApplicationContractContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<GetLowStockItemsResponseDto> Handle(GetLowStockItemsQuery request, CancellationToken cancellationToken)
+    {
+        var protoRequest = new GetLowStockItemsRequest
+        {
+            Page = 1,
+            PageSize = request.Count
+        };
+
+        if (request.WarehouseId.HasValue)
+            protoRequest.WarehouseId = request.WarehouseId.Value;
+        
+        if (request.ProductType.HasValue)
+            protoRequest.ProductType = (ProductType)request.ProductType.Value;
+
+        var response = await _context.Inventory.GetLowStockItemsAsync(protoRequest, cancellationToken: cancellationToken);
+
+        return new GetLowStockItemsResponseDto
+        {
+            TotalCount = response.TotalCount,
+            Items = response.Items.Select(i => new LowStockItemDto
+            {
+                Id = i.Id,
+                ProductId = i.ProductId,
+                DiscountProductId = i.DiscountProductId,
+                ProductType = (int)i.ProductType,
+                ProductName = i.ProductTitle,
+                Quantity = i.Quantity,
+                ReservedQuantity = i.ReservedQuantity,
+                AvailableQuantity = i.AvailableQuantity,
+                LowStockThreshold = i.LowStockThreshold,
+                ReorderPoint = i.ReorderPoint,
+                WarehouseId = i.WarehouseId,
+                WarehouseName = i.WarehouseName
+            }).ToList()
+        };
+    }
+}