Add validators and services for Product Galleries and Product Tags

- Implemented Create, Delete, Get, and Update validators for Product Galleries.
- Added Create, Delete, Get, and Update validators for Product Tags.
- Created service classes for handling Discount Categories, Discount Orders, Discount Products, Discount Shopping Cart, Product Categories, Product Galleries, and Product Tags.
- Each service class integrates with CQRS for command and query handling.
- Established mapping profiles for Product Galleries.

src/CMSMicroservice.Application/ProductImagesCQ/Queries/GetAllProductImagesByFilter/GetAllProductImagesByFilterQueryHandler.cs

@@ -10,7 +10,7 @@ public class GetAllProductImagesByFilterQueryHandler : IRequestHandler<GetAllPro
 
     public async Task<GetAllProductImagesByFilterResponseDto> Handle(GetAllProductImagesByFilterQuery request, CancellationToken cancellationToken)
     {
-        var query = _context.ProductImagess
+        var query = _context.ProductImages
             .ApplyOrder(sortBy: request.SortBy)
             .AsNoTracking()
             .AsQueryable();

src/CMSMicroservice.Application/ProductImagesCQ/Queries/GetProductImages/GetProductImagesQueryHandler.cs

@@ -11,12 +11,12 @@ public class GetProductImagesQueryHandler : IRequestHandler<GetProductImagesQuer
     public async Task<GetProductImagesResponseDto> Handle(GetProductImagesQuery request,
         CancellationToken cancellationToken)
     {
-        var response = await _context.ProductImagess
+        var response = await _context.ProductImages
             .AsNoTracking()
             .Where(x => x.Id == request.Id)
             .ProjectToType<GetProductImagesResponseDto>()
             .FirstOrDefaultAsync(cancellationToken);
 
-        return response ?? throw new NotFoundException(nameof(ProductImages), request.Id);
+        return response ?? throw new NotFoundException(nameof(ProductImage), request.Id);
     }
 }