Add AutoMapper and MediatR; implement DtoMappingProfile

Added `AutoMapper` and `MediatR` NuGet packages to the
`ReC.Application.csproj` file to include these libraries as
dependencies.

Created a `DtoMappingProfile` class in the `ReC.Application.Dto`
namespace to define a mapping configuration between the `RecAction`
entity and the `RecActionDto` data transfer object using `AutoMapper`.

Included necessary `using` directives for `AutoMapper` and
`ReC.Domain.Entities` in the `DtoMappingProfile.cs` file to enable
the mapping functionality.

These changes improve maintainability by automating object-to-object
mapping and prepare the project for potential use of the mediator
pattern with `MediatR`.

src/ReC.Application/ReC.Application.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="15.1.0" />
     <PackageReference Include="MediatR" Version="13.1.0" />
   </ItemGroup>