Refactor namespaces for DTO classes

Updated `DtoMappingProfile` and `RecActionDto` to use the
`ReC.Application.Common.Dto` namespace instead of
`ReC.Application.Dto`. Adjusted `ReadRecActionQuery` to reflect
this namespace change. No functional changes were introduced.

src/ReC.Application/Common/Dto/DtoMappingProfile.cs

@@ -0,0 +1,12 @@
+using AutoMapper;
+using ReC.Domain.Entities;
+
+namespace ReC.Application.Common.Dto;
+
+public class DtoMappingProfile : Profile
+{
+    public DtoMappingProfile()
+    {
+        CreateMap<RecAction, RecActionDto>();
+    }
+}