refactor(products): migrate BO and FO ProductsControllers to CQS pattern
- Refactor Bo\ProductsController to use ActionExecutor and Queries
- Refactor Fo\Pages\ProductsController and Fo\Ajax\ProductsController to CQS
- Add Actions: CreateProduct, UpdateProduct, DeleteProduct with Inputs
- Add Queries: GetBoPaginatedProductsQuery, GetProductFormDataQuery, GetFoProductIndexPageQuery, GetFoFilteredProductsQuery
- Add DTOs: ProductFormDataDto and enrich ProductDto
- Encapsulate Action/Query inputs conversion in FormRequests
- Remove obsolete ProductDirectory and EloquentProductDirectory
- Add tests for Fo\Ajax\ProductsController