feat: Implement file management and authorization features

- Add RequiresPermissionAttribute for gRPC method access control.
- Create IFileManagementService interface for file upload and management.
- Implement AddProductImageCommand and handler for adding product images.
- Implement CreateNewProductsCommand and handler for creating new products with image uploads.
- Implement DeleteProductsCommand and handler for deleting products and their associations.
- Implement RemoveProductImageCommand and handler for removing product images from galleries.
- Implement UpdateProductsCommand and handler for updating product details and images.
- Create GetProductGalleryQuery and handler for retrieving product galleries.
- Implement PermissionService for role-based access control using JWT claims.
- Implement FileManagementService for handling file uploads and image optimization.
- Define gRPC service and messages for file management in fms.proto.
- Add FluentValidation for request validation in various commands.
- Create PermissionInterceptor for enforcing permissions on gRPC methods.

src/CMSMicroservice.Protobuf/CMSMicroservice.Protobuf.csproj

@@ -64,6 +64,8 @@
     <Protobuf Include="Protos\appversion.proto" ProtoRoot="Protos\" GrpcServices="Both" />
     <!-- Inventory Management System -->
     <Protobuf Include="Protos\inventory.proto" ProtoRoot="Protos\" GrpcServices="Both" />
+    <!-- FMS (File Management Service) - gRPC Client only -->
+    <Protobuf Include="Protos\fms.proto" ProtoRoot="Protos\" GrpcServices="Client" />
   </ItemGroup>
 
   <Target Name="PushToFoursatNuget" AfterTargets="Pack" Condition="'$(CI)' != 'true'">